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Injection locking and parametric locking in a superconducting circuit

D. Marković, J.-D. Pillet, E. Flurin, N. Roch, B. Huard,

arXiv:1904.01380, Arxiv

Understanding the saturation power of Josephson Parametric Amplifiers made from SQUIDs arrays

L. Planat, R. Dassonneville, J. Puertas Martínez, F. Foroughi, O. Buisson, W. Hasch-Guichard, C. Naud, R. Vijay, K. Murch, and N. Roch,

Physical Review Applied 11, 034014 (2019), Arxiv | Phys. Rev. Applied

A tunable Josephson platform to explore many-body quantum optics in circuit-QED

J. Puertas Martinez, S. Leger, N. Gheereart, R. Dassonneville, L. Planat, F. Foroughi, Y. Krupko, O. Buisson, C. Naud, W. Guichard, S. Florens, I. Snyman, N. Roch,

npj Quantum Information 5, 19 (2019), Arxiv | npj Quantum Information

See also editorial from Audrey Cottet: Superconducting quantum bits with artificial damping tackle the many body problem


Particle production in a waveguide ultra-strongly coupled to a qubit

N. Gheeraert, X. H. H. Zhang, S. Bera, N. Roch, H. U. Baranger and S. Florens,

Physical Review A 98, 043816 (2018), Arxiv | Phys. Rev. A

Kerr nonlinearity in a superconducting Josephson metamaterial

Y. Krupko, V. D. Nguyen, T. Weissl, E. Dumur, J. Puertas Martinez, R. Dassonneville, C. Naud, F. W. J. Hekking, D. M. Basko, O. Buisson, N. Roch, W. Hasch-Guichard,

Physical Review B 98, 094516 (2018), Arxiv | Phys. Rev. B


Quantum trajectories and their statistics for remotely entangled quantum bits

A. Chantasri, M. E. Kimchi-Schwartz, N. Roch, I. Siddiqi, A. N. Jordan,

Physical Review X 6, 041052 (2016) Arxiv | Phys. Rev. X

Quantum trajectories of superconducting qubits

S. J. Weber, K. W. Murch, M. E. Schwartz, N. Roch and I. Siddiqi,

Comptes Rendus Physique 17 (7), 766-777 (2016), Arxiv| C.R. Phys.

Unexpectedly allowed transition in two inductively coupled transmons

E. Dumur, B. Küng, A. K. Feofanov, T. Weissl, N. Roch, C. Naud, W. Guichard, and O. Buisson,

IEEE Transactions on Applied Superconductivity 26 (3), 1-4 (2016), Arxiv| IEEE Trans. App. Sup.


Superconducting Quantum Node for Entanglement and Storage of Microwave Radiation

E. Flurin, N. Roch, J. D. Pillet, F. Mallet, and B. Huard,

Physical Review Letters 114, 090503 (2015), Arxiv | Phys. Rev. Lett.

A V-shape superconducting artificial atom based on two inductively coupled transmons

E. Dumur, B. Küng, A. K. Feofanov, T. Weissl, N. Roch, C. Naud, W. Guichard, and O. Buisson,

Physical Review B 92, 020515(R) (2015), Arxiv | Phys. Rev. B


Observation of Measurement-Induced Entanglement and Quantum Trajectories of Remote Superconducting Qubits

N. Roch, M. E. Schwartz, F. Motzoi, C. Macklin, R. Vijay, A. W. Eddins, A. N. Korotkov, K. B. Whaley, M. Sarovar, and I. Siddiqi,

Physical Review Letters 112, 170501 (2014), Arxiv | Phys. Rev. Lett.

See also the Viewpoint in Physics: Remote Controlled Entanglement

Stabilizing Spin Coherence Through Environmental Entanglement in Strongly Dissipative Quantum Systems

S. Bera, S. Florens, H. U. Baranger, N. Roch, A. Nazir, and A. W. Chin,

Physical Review B 89, 121108(R) (2014), Arxiv | Phys. Rev. B


Stabilizing a superconducting qubit trajectory with projective quantum feedback

P. Campagne-Ibarcq, E. Flurin, N. Roch, D. Darson, P. Morfin, M. Mirrahimi, M. H. Devoret, and B. Huard,

Physical Review X 3, 021008 (2013), Arxiv | Phys. Rev. X


Generating Entangled Microwave Radiation Over Two Transmission Lines

E. Flurin, N. Roch, F. Mallet, M. Devoret, and B. Huard,

Physical Review Letters 109, 183901, (2012), Arxiv | Phys. Rev. Lett.

See also the Viewpoint in Physics: Entangled Microwaves Split Up

Widely tunable, nondegenerate three-wave mixing microwave device operating near the quantum limit

N. Roch, E. Flurin, F. Nguyen, P. Morfin, P. Campagne-Ibarcq, M. Devoret, and B. Huard

Physical Review Letters 108, 147701, (2012), Arxiv | Phys. Rev. Lett.


Coupling a quantum dot, fermionic leads, and a microwave cavity on a chip

M. Delbecq, V. Schmitt, F. Parmentier, N. Roch, J. Viennot, G. Feve, B. Huard, C. Mora, A. Cottet, and T. Kontos

Physical Review Letters 107, 256804, (2011), Arxiv | Phys. Rev. Lett.

Universal transport signatures in two-electron molecular quantum dots: gate-tunable hund's rule, underscreened kondo effect and quantum phase transitions

S. Florens, A. Freyn, N. Roch, W. Wernsdorfer, F. Balestro, P. Roura-Bas, and A. A. Aligia

Journal of Physics-Condensed Matter 23 (24), 243202, (2011), Arxiv | Journal of Physics-Condensed Matter

Cotunneling through a magnetic single-molecule transistor based on N@C60

N. Roch, R. Vincent, F. Elste, W. Harneit, W. Wernsdorfer, C. Timm, and F. Balestro

Physical Review B 83, 081407(R), (2011), Arxiv | Phys. Rev. B


Superconductivity in a single-C60 transistor

C. B. Winkelmann, N. Roch, W. Wernsdorfer, V. Bouchiat, and F. Balestro

Nature Physics 5 (12), 876-879, (2009), Arxiv | Nat. Phys.

Observation of the underscreened Kondo effect in a molecular transistor

N. Roch, S. Florens, T. A. Costi, W. Wernsdorfer, and F. Balestro

Physical Review Letters 103, 197202, (2009), Arxiv | Journal of Physics-Condensed Matter


Quantum phase transition in a single-molecule quantum dot

N. Roch, S. Florens, V. Bouchiat, W. Wernsdorfer, and F. Balestro

Nature 453 (7195), 633-U3, (2008), Arxiv | Nature


Patterning frictional differentiation to a polymer surface by atomic force microscopy

G. S. Watson, C. L. Brown, S. Myhra, N. Roch, S. Hu and J. A. Watson

Proc. SPIE 6037 Device and Process Technologies for Microelectronics, MEMS, and Photonics IV, 60371B, (2005), SPIE


January 2019

We now have a new PhD graduate: congrats Remy for this very nice defense!

October 2018

Nicolas Gheeraert explained us all about "Quantum non-linearities of a qubit ultra-strongly coupled to a waveguide", his PhD work. Great defense Nicolas!

September 2018

Check our new paper explaining saturation effects in Josephson Parametric Amplifiers.

July 2018

Our paper presenting a detailed analysis of the Kerr non-linearity in a Josephson junctions chain is now available in the Publications section.

June 2018

Javier defended his Phd thesis. Congratulations doctor Puertas Martinez!

February 2018

Check the Publications section. Two new preprints are available.

September 2017

Welcome to Sebastien Leger! He will aim at observing many-body physics effects in superconducting circuits during his PhD.

October 2016

Luca Planat starts his PhD on Josephson Parametric Amplifiers (JPA), welcome Luca!

September 2016

Nicolas Gheeraert is awarded a Raman-Charpak Fellowship to join QuMac, the lab of Vijay, for an internship. Congratulations Nicolas!

September 2016

Pictures of the new lab are available, check the Photo Gallery section.

September 2016

Our review paper on quantum trajectories has just been published.

April 2016

Our paper on "Unexpectedly allowed transitions" in transmon qubits is now out. Have a look at the Publications section.

September 2015

Welcome to Remy Dassonneville who starts his PhD!

June 2015

Wanna know what is a quantum trajectory? Have a look at our new paper on the Arxiv.

April 2015

We are happy to welcome our new Phd student: Javier Puertas Martinez.

March 2015

Check our new paper about a Superconducting Quantum Node for Entanglement and Storage of Microwave Radiation!

January 2015

Our recent work on A V-shape superconducting artificial atom based on two inductively coupled transmons is now on the Arxiv.

March 2014

Our paper on measurement induced entanglement between remote superconducting quantum bits has been accepted for publication in Physical Review Letters and featured as a Viewpoint in Physics!

October 2013

After my post-doc in the quantum nanoelectronics lab at UC Berkeley, I am joining the Neel Institue!