Research

Main research interests

  1. Quantum coherence, quantum computing, and single-electron effects in mesoscopic systems
  2. Mesoscopic superconductivity
  3. Ultracold atoms, optical lattices, Bose-Einstein condensation
  4. Unconventional superconductors
  5. Biologically motivated physics questions



Selected preprints/publications Bruder group:

  • Quantum synchronization of two van der Pol oscillators
    S. Walter, A. Nunnenkamp, and C. Bruder
    arXiv:1406.7134, accepted for publication in Annalen der Physik

  • Josephson effect in normal and ferromagnetic topological insulator planar, step and edge junctions
    J. Nussbaum, T.L. Schmidt, C. Bruder, and R.P. Tiwari
    Phys. Rev. B 90, 045413 (2014).

  • Neutral edge modes in a superconductor - topological-insulator hybrid structure in a perpendicular magnetic field
    R.P. Tiwari, U. Zülicke, C. Bruder, and V.M. Stojanovic
    arXiv:1312.6251

  • Quantum transport signatures of chiral edge states in Sr_2RuO_4
    R.P. Tiwari, W. Belzig, M. Sigrist, and C. Bruder
    Phys. Rev. B 89, 184512 (2014).

  • Quantum synchronization of a driven self-sustained oscillator
    S. Walter, A. Nunnenkamp, and C. Bruder
    Phys. Rev. Lett. 112, 094102 (2014).

  • Equivalence between an optomechanical system and a Kerr medium
    S. Aldana, C. Bruder, and A. Nunnenkamp
    Phys. Rev. A 88, 043826 (2013).

  • Signatures of tunable Majorana-fermion edge states
    R.P. Tiwari, U. Zülicke, and C. Bruder
    New J. Phys. 16, 025004 (2014).

  • Strategy for implementing stabilizer-based codes on solid-state qubits
    T. Tanamoto, V.M. Stojanovic, C. Bruder, and D. Becker
    Phys. Rev. A 87, 052305 (2013).

  • Measuring ultrasmall time delays of light by joint weak measurements
    G. Strübi and C. Bruder
    Phys. Rev. Lett. 110, 083605 (2013).

  • Strong-coupling effects in dissipatively coupled optomechanical systems
    T. Weiss, C. Bruder, and A. Nunnenkamp
    New J. Phys. 15, 045017 (2013).

  • Nonsymmetrized correlations in quantum noninvasive measurements
    A. Bednorz, C. Bruder, B. Reulet, and W. Belzig
    Phys. Rev. Lett. 110, 250404 (2013).

  • Microwave-controlled coupling of Majorana bound states
    T.L. Schmidt, A. Nunnenkamp, and C. Bruder
    New J. Phys. 15, 025043 (2013).

  • Majorana qubit rotations in microwave cavities
    T.L. Schmidt, A. Nunnenkamp, and C. Bruder
    Phys. Rev. Lett. 110, 107006 (2013).

  • Majorana fermions from Landau quantization in a superconductor--topological-insulator hybrid structure
    R.P. Tiwari, U. Zülicke, and C. Bruder
    Phys. Rev. Lett. 110, 186805 (2013).

  • Superfluid drag of two-species Bose-Einstein condensates in optical lattices
    P.P. Hofer, C. Bruder, and V.M. Stojanovic
    Phys. Rev. A 86, 033627 (2012).

  • Mean-field analysis of spinor bosons in optical superlattices
    A. Wagner, A. Nunnenkamp, and C. Bruder
    Phys. Rev. A 86, 023624 (2012).

  • Quantum simulation of small-polaron formation with trapped ions
    V.M. Stojanovic, Tao Shi, C. Bruder, and J.I. Cirac
    Phys. Rev. Lett. 109, 250501 (2012).

  • Electron(hole)-phonon coupling in crystalline organic semiconductors: microscopic evidence for non-polaronic charge carriers
    N. Vukmirovic, C. Bruder, and V.M. Stojanovic
    Phys. Rev. Lett. 109, 126407 (2012).

  • Preserving universal resources for one-way quantum computing
    T. Tanamoto, D. Becker, V.M. Stojanovic, and C. Bruder
    Phys. Rev. A 86, 032327 (2012).

  • Spin-1 atoms in optical superlattices: single-atom tunneling and entanglement
    A. Wagner, C. Bruder, and E. Demler
    Phys. Rev. A 84, 063636 (2011).

  • Quantum-control approach to realising a Toffoli gate in circuit QED
    V.M. Stojanovic, A. Fedorov, A. Wallraff, and C. Bruder
    Phys. Rev. B 85, 054504 (2012).

  • Interferometric and noise signatures of Majorana fermion edge states in transport experiments
    G. Strübi, W. Belzig, M.-S. Choi, and C. Bruder
    Phys. Rev. Lett. 107, 136403 (2011).

  • Greenberger-Horne-Zeilinger generation protocol for N superconducting transmon qubits capacitively coupled to a quantum bus
    S. Aldana, Ying-Dan Wang, and C. Bruder
    Phys. Rev. B 84, 134519 (2011).

  • Ideal quantum non-demolition measurement of a flux qubit at variable bias
    Ying-Dan Wang, Xiaobo Zhu, and C. Bruder
    Phys. Rev. B 83, 134504 (2011).

  • Controlling qubit arrays with anisotropic $XXZ$ Heisenberg interaction by acting on a single qubit
    R. Heule, C. Bruder, D. Burgarth, and V.M. Stojanovic
    Eur. Phys. J. D 63, 41 (2011).

  • A single fermion in a Bose Josephson Junction
    M. Rinck and C. Bruder
    Phys. Rev. A 83, 023608 (2011).

  • Local quantum control of Heisenberg spin chains
    R. Heule, C. Bruder, D. Burgarth, and V.M. Stojanovic
    Phys. Rev. A 82, 052333 (2010).

  • Polaronic signatures and spectral properties of graphene antidot lattices
    V.M. Stojanovic, N. Vukmirovic, and C. Bruder
    Phys. Rev. B 82, 165410 (2010).

  • Detection of qubit-oscillator entanglement in nanoelectromechanical systems
    T.L. Schmidt, K. Borkje, C. Bruder, and B. Trauzettel
    Phys. Rev. Lett. 104, 177205 (2010).

  • One-step multi-qubit GHZ state generation in a circuit QED system
    Ying-Dan Wang, S. Chesi, D. Loss, and C. Bruder
    Phys. Rev. B 81, 104524 (2010).

  • Cooling a micro-mechanical resonator by quantum back-action from a noisy qubit
    Ying-Dan Wang, Yong Li, Fei Xue, C. Bruder, and K. Semba
    Phys. Rev. B 80, 144508 (2009).

  • Transport properties of a superconducting single-electron transistor coupled to a nanomechanical oscillator
    V. Koerting, T.L. Schmidt, C.B. Doiron, B. Trauzettel, and C. Bruder
    Phys. Rev. B 79, 134511 (2009).

  • Graph criterion for algebraic controllability of quantum networks
    D. Burgarth, S. Bose, C. Bruder, and V. Giovannetti
    Phys. Rev. A 79, 060305(R) (2009).

  • Undoing a quantum measurement
    C. Bruder and D. Loss
    Physics 1, 34 (2008).

  • Quantum theory of transmission line resonator-assisted cooling of a micromechanical resonator
    Yong Li, Ying-Dan Wang, Fei Xue, and C. Bruder
    Phys. Rev. B 78, 134301 (2008).

  • The single-atom box: bosonic staircase and effects of parity
    D.V. Averin, T. Bergeman, P.R. Hosur, and C. Bruder
    Phys. Rev. A 78, 031601(R) (2008).

  • Density correlations in ultracold Fermi systems within the exact Richardson solution
    S. Staudenmayer, W. Belzig, and C. Bruder
    Phys. Rev. A 77, 013612 (2008).

  • Dynamic method to distinguish between left- and right-handed chiral molecules
    Yong Li and C. Bruder
    Phys. Rev. A 77, 015403 (2008).

  • The connection between noise and quantum correlations in a double quantum dot
    F. Bodoky, W. Belzig, and C. Bruder
    Phys. Rev. B 77, 035302 (2008).

  • Measuring the momentum of a nanomechanical oscillator through the use of two tunnel junctions
    C.B. Doiron, B. Trauzettel, and C. Bruder
    Phys. Rev. Lett. 100, 027202 (2008).

  • Role of interference in quantum state transfer through spin chains
    A.O. Lyakhov, D. Braun, and C. Bruder
    Phys. Rev. A 76, 022321 (2007).

  • Improved position measurement of nano-electromechanical systems using cross-correlations
    C.B. Doiron, B. Trauzettel, and C. Bruder
    Phys. Rev. B 76, 195312 (2007).

  • Generalized Stern-Gerlach Effect for Chiral Molecules
    Yong Li, C. Bruder, and C.P. Sun
    Phys. Rev. Lett. 99, 130403 (2007).

  • Temperature dependence of Coulomb drag between finite-length quantum wires
    J. Peguiron, C. Bruder, and B. Trauzettel
    Phys. Rev. Lett. 99, 086404 (2007).

  • Density correlations in ultracold atomic Fermi gases
    W. Belzig, C. Schroll, and C. Bruder
    Phys. Rev. A 75, 063611 (2007).

  • Spin-transfer torque in magnetic multilayer nanopillars
    J. Peguiron, M.-S. Choi, and C. Bruder
    J. of Phys.: Conf. Ser. 61, 909 (2007).

  • Time-dependent Fröhlich transformation approach for two-atom entanglement generated by successive passage through a cavity
    Yong Li, C. Bruder, and C.P. Sun
    Phys. Rev. A 75, 032302 (2007).

  • Use of dynamical coupling for improved quantum state transfer
    A.O. Lyakhov and C. Bruder
    Phys. Rev. B 74, 235303 (2006).

  • Overscreening Diamagnetism in Cylindrical Superconductor-Normal Metal-Heterostructures
    W. Belzig, C. Bruder, and Yu.V. Nazarov
    J. Low Temp. Phys. 147, 441 (2007).

  • Nanospintronics with carbon nanotubes
    A. Cottet, T. Kontos, S. Sahoo, H.T. Man, M.-S. Choi, W. Belzig, C. Bruder, A. Morpurgo, and C. Schönenberger
    Semicond. Sci. Technol. 21, S78 (2006).

  • Electrical transport through a single-electron transistor strongly coupled to an oscillator
    C.B. Doiron, W. Belzig, and C. Bruder
    Phys. Rev. B 74, 205336 (2006).

  • Site-selective adsorption of naphthalene-tetracarboxylic-dianhydride on Ag(110): First-principles calculations
    A. Alkauskas, A. Baratoff, and C. Bruder
    Phys. Rev. B 73, 165408 (2006).

  • Controlling spin in an electronic interferometer with spin-active interfaces
    A. Cottet, T. Kontos, W. Belzig, C. Schönenberger, and C. Bruder
    Europhys. Lett. 74, 320 (2006).

  • Spin filter using a semiconductor quantum ring side-coupled to a quantum wire
    Minchul Lee and C. Bruder
    Phys. Rev. B 73, 085315 (2006).

  • The Bose-Hubbard model: from Josephson junction arrays to optical lattices
    C. Bruder, R. Fazio, and G. Schön
    Ann. Phys. (Leipzig) 14, 566 (2005).

  • Quantum state transfer in arrays of flux qubits
    A.O. Lyakhov and C. Bruder
    New J. Phys. 7, 181 (2005).

  • Charge and spin density modulations in semiconductor quantum wires
    Minchul Lee and C. Bruder
    Phys. Rev. B 72, 045353 (2005).

  • Effects of a nonlinear bath at low temperatures
    H. Gassmann and C. Bruder
    Phys. Rev. B 72, 035102 (2005).

  • Solid-State Quantum Communication With Josephson Arrays
    A. Romito, R. Fazio, and C. Bruder
    Phys. Rev. B 71, 100501(R) (2005).

  • Perturbative corrections to the Gutzwiller mean-field solution of the Mott-Hubbard model
    C. Schroll, F. Marquardt, and C. Bruder
    Phys. Rev. A 70, 053609 (2004).

  • Positive cross-correlations due to dynamical channel-blockade in a three-terminal quantum dot
    A. Cottet, W. Belzig, and C. Bruder
    Phys. Rev. B 70, 115315 (2004).

  • Gaussian form of effective core potential and response function basis set derived from Troullier-Martins pseudopotential: results for Ag and Au
    A. Alkauskas, A. Baratoff, and C. Bruder
    J. Phys. Chem. A 108, 6863 (2004).

  • Effects of dephasing on shot-noise in an electronic Mach-Zehnder interferometer
    F. Marquardt and C. Bruder
    Phys. Rev. B 70, 125305 (2004).

  • Charge transport through a SET with a mechanically oscillating island
    N.M. Chtchelkatchev, W. Belzig, and C. Bruder
    Phys. Rev. B 70, 193305 (2004).

  • Quantum dissipative dynamics of the magnetic resonance force microscope in the single-spin detection limit
    H. Gassmann, Mahn-Soo Choi, Hangmo Yi, and C. Bruder
    Phys. Rev. B 69, 115419 (2004).

  • Positive cross-correlations in a three-terminal quantum dot with ferromagnetic contacts
    A. Cottet, W. Belzig, and C. Bruder
    Phys. Rev. Lett. 92, 206801 (2004).

  • Influence of dephasing on shot noise in a Mach-Zehnder interferometer
    F. Marquardt and C. Bruder
    Phys. Rev. Lett. 92, 056805 (2004).

  • Decoherence of cold atomic gases in magnetic micro-traps
    C. Schroll, W. Belzig, and C. Bruder
    Phys. Rev. A 68, 043618 (2003).

  • Multiple Andreev reflections in a carbon nanotube quantum dot
    M.R. Buitelaar, W. Belzig, T. Nussbaumer, B. Babic, C. Bruder, and C. Schönenberger
    Phys. Rev. Lett. 91, 057005 (2003).

  • Variable electrostatic transformer: controllable coupling of two charge qubits
    D.V. Averin and C. Bruder
    Phys. Rev. Lett. 91, 057003 (2003).

  • Dephasing in sequential tunneling through a double-dot interferometer
    F. Marquardt and C. Bruder
    Phys. Rev. B 68, 195305 (2003).

  • Josephson effect in S_FXS_F junctions
    N.M. Chtchelkatchev, W. Belzig, and C. Bruder
    JETP Lett. 75, 646 (2002).

  • Non-Markoffian effects of a simple nonlinear bath
    H. Gassmann, F. Marquardt, and C. Bruder
    Phys. Rev. E 66, 041111 (2002).

  • Full Counting Statistics of a Superconducting Beam Splitter
    J. Börlin, W. Belzig, and C. Bruder
    Phys. Rev. Lett. 88, 197001 (2002).

  • Separation quality of a geometric ratchet
    C. Keller, F. Marquardt, and C. Bruder
    Phys. Rev. E 65, 041927 (2002).

  • pi-0 Transition in Superconductor-Ferromagnet-Superconductor Junctions
    N.M. Chtchelkatchev, W. Belzig, Yu.V. Nazarov, and C. Bruder
    JETP Lett. 74, 323 (2001).

  • Visibility of the Aharonov-Bohm Effect in a Ring Coupled to a Fluctuating Magnetic Flux
    F. Marquardt and C. Bruder
    J. Low Temp. Phys. 126, 1325 (2002).

  • Aharonov-Bohm ring with fluctuating flux
    F. Marquardt and C. Bruder
    Phys. Rev. B 65, 125315 (2002).

  • Superposition of two mesoscopically distinct quantum states: Coupling a Cooper-pair box to a large superconducting island
    F. Marquardt and C. Bruder
    Phys. Rev. B 63, 054514 (2001).

  • The excitation spectrum of mesoscopic proximity structures
    S. Pilgram, W. Belzig, and C. Bruder
    Phys. Rev. B 62, 12462 (2000).

  • Coherent oscillations in a Cooper-pair box
    Mahn-Soo Choi, R. Fazio, J. Siewert, and C. Bruder
    Europhys. Lett. 53, 251 (2001).

  • Spin-Dependent Josephson Current through Double Quantum Dots and Measurement of Entangled Electron States
    Mahn-Soo Choi, C. Bruder, and D. Loss
    Phys. Rev. B 62, 13569 (2000).

  • Transport Through Double Quantum Dots
    R. Ziegler, C. Bruder, and H. Schoeller
    Phys. Rev. B 62, 1961 (2000).

  • Anderson-type Model for a Molecule Adsorbed on a Metal Surface
    Mahn-Soo Choi and C. Bruder
    Europhys. Lett. 50, 642 (2000).

  • Mesoskopische Supraleitung
    W. Belzig und C. Bruder
    Physikalische Blätter 59, Nr. 5, 39 (2000).

  • Spectral Features of Proximity Systems
    S. Pilgram, W. Belzig, and C. Bruder
    Physica B 280, 442 (2000).

  • Nobel Prize for Physics and Chemistry 1998
    C. Bruder and D. Loss
    Europhys. News 30, 15 (1999).

  • Quasiclassical Green's Function Approach to Mesoscopic Superconductivity
    W. Belzig, F.K. Wilhelm, C. Bruder, G. Schön, and A.D. Zaikin
    Superlattices and Microstructures 25, 1251 (1999).

  • Phase Transition in a Chain of Quantum Vortices
    C. Bruder, L.I. Glazman, A.I. Larkin, J.E. Mooij, and A. van Oudenaarden
    Phys. Rev. B 59, 1383 (1999).

  • Broadening of Andreev Bound States in d_x^2-y^2 Superconductors
    A. Poenicke, Yu.S. Barash, C. Bruder, and V. Istyukov
    Phys. Rev. B 59, 7102 (1999).

  • Cold Bosonic Atoms in Optical Lattices
    D. Jaksch, C. Bruder, J.I. Cirac, C.W. Gardiner, and P. Zoller
    Phys. Rev. Lett. 81, 3108 (1998).

  • Diamagnetic Response of an N-S-Proximity System at Arbitrary Impurity Concentration
    W. Belzig, C. Bruder, and A.L. Fauchere
    Phys. Rev. B 58, 14531 (1998).

  • Anisotropic Josephson Effects in Point Contacts between the Heavy Fermion Superconductor URu_2Si_2 and Nb
    S. Wasser, A. Nowack, W. Schlabitz, A. Freimuth, O.E. Kvitnitskaya, A.A. Menovsky, and C. Bruder
    Phys. Rev. Lett. 81, 898 (1998).

  • Quasiclassical Theory of Twin Boundaries in High-T_c Superconductors
    W. Belzig, C. Bruder, and M. Sigrist
    Phys. Rev. Lett. 80, 4285 (1998).

  • Orbital Paramagnetism of Electrons in Proximity to a Superconductor
    C. Bruder and Y. Imry
    Phys. Rev. Lett. 80, 5782 (1998).

  • Photon-Assisted Transport Through Ultrasmall Quantum Dots: Influence of Intradot Transitions
    Ph. Brune, C. Bruder, and H. Schoeller
    Phys. Rev. B 56, 4730 (1997).

  • Aharonov-Bohm-Type Oscillations of Thermopower in a Quantum Dot Ring Geometry
    Ya.M. Blanter, C. Bruder, R. Fazio, and H. Schoeller
    Phys. Rev. B 55, 4069 (1997).

  • Van der Waals und Casimir-Kräfte
    C. Bruder
    Physik in unserer Zeit 28, 149 (1997).

  • Local Density of States in a Dirty Normal Metal Connected to a Superconductor
    W. Belzig, C. Bruder, and G. Schön
    Phys. Rev. B 54, 9443 (1996).

  • Diamagnetic Response of Normal-metal -- Superconductor Double Layers
    W. Belzig, C. Bruder, and G. Schön
    Phys. Rev. B 53, 5727 (1996).

  • Aharonov-Bohm Oscillations and Resonant Tunneling in Strongly Correlated Quantum Dots
    C. Bruder, R. Fazio, and H. Schoeller
    Phys. Rev. Lett. 7652, 114 (1996).

  • Mesoscopic Superconductivity
    C. Bruder
    Superconductivity Review 1, 261 (1996).

  • Quantum-Phase Transitions of Interacting Bosons and the Supersolid Phase
    A. van Otterlo, K.-H. Wagenblast, R. Baltin, C. Bruder, R. Fazio, and G. Schön
    Phys. Rev. B 52, 16176 (1995).

  • Andreev Scattering in the Anisotropic Heavy-Fermion Superconductor UPt_3
    G. Goll, C. Bruder, and H. v. Löhneysen
    Phys. Rev. B 52, 6801 (1995).

  • Tunnel Junctions of Unconventional Superconductors
    C. Bruder, A. van Otterlo, and G.T. Zimanyi
    Phys. Rev. B 51, 12904 (1995).

  • Proximity Effect and Charging in Mesoscopic Normal Metal-Superconductor Junction Systems
    C. Bruder, R. Fazio, and G. Schön
    Phys. Rev. B 50, 12766 (1994).

  • Do the A4C60 Fullerides have a Broken-symmetry Ground State?
    S.C. Erwin and C. Bruder
    Physica B 199-200, 600 (1994).

  • Charging Effects in Ultrasmall Quantum Dots in the Presence of Time-Varying Fields
    C. Bruder and H. Schoeller
    Phys. Rev. Lett. 72, 1076 (1994).

  • Superconductor-Mott Insulator Transition in Bose Systems with Finite Range Interactions
    C. Bruder, R. Fazio, and G. Schön
    Phys. Rev. B 47, 342 (1993).

  • Quantum Phase Transitions and Commensurability in Frustrated Josephson Junction Arrays
    C. Bruder, R. Fazio, A. Kampf, A. van Otterlo, and G. Schön
    Physica Scripta 42, 159 (1992).

  • Spin Waves and Stability of Magnetic Order in Frustrated Magnets
    C. Bruder and F. Mila
    Europhys. Lett. 17, 463 (1992).

  • Magnetic Force Microscopy and Superconductors
    C. Bruder
    Physica C 185-189, 1671 (1991).

  • Spin Dynamics in a Frustrated Magnet with Short-Range Order
    F. Mila, D. Poilblanc, and C. Bruder
    Phys. Rev. B 43, 7891 (1991).

  • Ordering by Quantum Fluctuations in a Strongly Frustrated Heisenberg Antiferromagnet
    A.B. Harris, A.J. Berlinsky, and C. Bruder
    J. Appl. Phys. 69, 5200 (1991).

  • Andreev Scattering in Anisotropic Superconductors
    C. Bruder
    Phys. Rev. B 41, 4017 (1990).

  • A New Variational Ansatz for the Ground State of the 2d-Heisenberg Antiferromagnet
    C. Albanese and C. Bruder
    Europhys. Lett. 8, 483 (1989).

  • Evidence for Resonant Impurity Scattering in Superconducting UBe_13
    H.R. Ott, E. Felder, C. Bruder, and T.M. Rice
    Europhys. Lett. 3, 1123 (1987).

  • Symmetry and Stationary Points of a Free Energy: The Case of Superfluid 3He
    C. Bruder and D. Vollhardt
    Phys. Rev. B 34, 131 (1986).

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