Journal Club Archive 2016

Wednesday, December 21st 2016
Samuel Boutin, Christian Kraglund Andersen, Jayameenakshi Venkatraman, Andrew J. Ferris, Alexandre Blais
Resonator reset in circuit QED by optimal control for large open quantum systems,
arXiv:1609.03170.
Discussion leader: Niels.

Wednesday, December 14th 2016
David C. McKay, Christopher J. Wood, Sarah Sheldon, Jerry M. Chow, Jay M. Gambetta
Efficient Z-Gates for Quantum Computing,
arXiv:1612.00858.
Discussion leader: Adriaan.

Wednesday, December 7th 2016
Discussion on OpenCL:
John E. Stone, David Gohara, and Guochun Shi
OpenCL: A Parallel Programming Standard for Heterogeneous Computing Systems,
Comput Sci Eng. 12(3), 66–72 (2010).
&
Aaftab Munshi
The OpenCL specification,
IEEE Hot Chips 21 Symposium (2009).
Discussion leader: Xiang.

Wednesday, December 1st 2016
Robert S. Smith, Michael J. Curtis, William J. Zeng
A Practical Quantum Instruction Set Architecture,
arXiv:1608.03355.
Discussion leader: Wouter.

Wednesday, November 23rd 2016
John M. Martinis, S. Nam, J. Aumentado, K. M. Lang, and C. Urbina
Decoherence of a superconducting qubit due to bias noise,
Phys. Rev. B 67, 094510 (2003).
Discussion leader: Leo.

Wednesday, November 16th 2016
Johan C.J.G. Withagen, A.J. Annema, B. Nauta, F.E. van Vliet
An 8-10 GHz Upconversion Mixer, with a Low-Frequency Calibration Loop resulting in better than -73dBc In-Band Spurs,
IEEE Radio Frequency Integrated Circuits Symposium (2016).
Discussion leader: Duije.

Wednesday, November 9th 2016
Tanay Roy, Suman Kundu, Madhavi Chand, Sumeru Hazra, N. Nehra, R. Cosmic, A. Ranadive, Meghan P. Patankar, Kedar Damle, R. Vijay
Implementation of pairwise longitudinal coupling in a three-qubit superconducting circuit,
arXiv:1610.07915.
Discussion leader: Ramiro.

Wednesday, November 2nd 2016
F. Chiodi, J.-E. Duvauchelle, C. Marcenat, D. Débarre, F. Lefloch
All silicon Josephson junctions,
arXiv:1610.08453.
Discussion leader: Ale.

Wednesday, October 19th 2016
David C. McKay, Stefan Filipp, Antonio Mezzacapo, Easwar Magesan, Jerry M. Chow, Jay M. Gambetta
A universal gate for fixed-frequency qubits via a tunable bus,
arXiv:1604.03076.
Discussion leader: Marios.

Wednesday, October 12 2016
B Chiaro, A Megrant, A Dunsworth, Z Chen, R Barends, B Campbell, Y Chen, A Fowler, I C Hoi, E Jeffrey
Dielectric surface loss in superconducting resonators with flux-trapping holes,
Sci. Technol. 29, 104006 (2016).
&
J Burnett, L Faoro and T Lindström
Analysis of high quality superconducting resonators: consequences for TLS properties in amorphous oxides,
Sci. Technol. 29, 044008 (2016).
Discussion leader: Dave.

Wednesday, October 5 2016
Benjamin J. Chapman, Bradley A. Moores, Eric I. Rosenthal, Joseph Kerckhoff, K. W. Lehnert
General purpose multiplexing device for cryogenic microwave systems,
Appl. Phys. Lett. 108, 222602 (2016).
Discussion leader: Stefano.

Wednesday, September 28 2016
Shay Hacohen-Gourgy, Leigh S. Martin, Emmanuel Flurin, Vinay V. Ramasesh, K. Birgitta Whaley, Irfan Siddiqi
Dynamics of simultaneously measured non-commuting observables,
arXiv:1608.06652
Discussion leader: Chris.

Wednesday, September 21 2016
C. M. Quintana, Yu Chen, D. Sank, A. G. Petukhov, T. C. White, Dvir Kafri, B. Chiaro, A. Megrant, R. Barends, B. Campbell, Z. Chen, A. Dunsworth, A. G. Fowler, R. Graff, E. Jeffrey, J. Kelly, E. Lucero, J. Y. Mutus, M. Neeley, C. Neill, P. J. J. O’Malley, P. Roushan, A. Shabani, V. N. Smelyanskiy, A. Vainsencher, J. Wenner, H. Neven, John M. Martinis
Observation of classical-quantum crossover of 1/f flux noise and its paramagnetic temperature dependence,
arXiv:1608.08752
Discussion leader: Florian.

Wednesday, September 14 2016
A. A. Adamyan, S. E. de Graaf, S. E. Kubatkin and A. V. Danilov
Superconducting microwave parametric amplifier based on a quasi-fractal slow propagation line,
J. Appl. Phys. 119, 083901 (2016).
Discussion leader: Tom.

Wednesday, September 7 2016
Daniel Sank, Zijun Chen, Mostafa Khezri, J. Kelly, R. Barends, Y. Chen, A. Fowler, E. Jeffrey, E. Lucero, A. Megrant, J. Mutus, M. Neeley, P. Roushan, A. Vainsencher, T. White, B. Campbell, B. Chiaro, A. Dunsworth, C. Neill, P. J. J. O’Malley, C. Quintana, J. Wenner, Alexander N. Korotkov, John M. Martinis
Measurement-induced state transitions in a superconducting qubit: Beyond the rotating wave approximation,
arXiv:1606.05721.
Discussion leader: Niels.

Wednesday, August 31 2016
James R. Wootton, Janos R. Winkler, Daniel Loss
Noise thresholds for minimal surface code experiments,
arXiv:1608.05053.
Discussion leader: Adriaan.

Wednesday, August 24 2016
S. Debnath, N. M. Linke, C. Figgatt, K. A. Landsman, K. Wright & C. Monroe
Demonstration of a small programmable quantum computer with atomic qubits,
Nature 536, 63 (2016).
Discussion leader: Xiang.

Wednesday, August 10 2016
Kristinn Juliusson, Simon Bernon, Xin Zhou, Vivien Schmitt, Hélène le Sueur, Patrice Bertet, Denis Vion, Mazyar Mirahimi, Pierre Rouchon, Daniel Esteve
Manipulating Fock states of a harmonic oscillator while preserving its linearity,
arXiv:1607.05204
Discussion leader: Nathan.

Wednesday, August 3 2016
J.H. Béjanin, T.G. McConkey, J.R. Rinehart, C.T. Earnest, C.R.H. McRae, D. Shiri, J.D. Bateman, Y. Rohanizadegan, B. Penava, P. Breul, S. Royak, M. Zapatka, A.G. Fowler, M. Mariantoni
The Quantum Socket: Three-Dimensional Wiring for Extensible Quantum Computing,
arXiv:1606.00063
Discussion leader: Wouter.

Wednesday, July 27 2016
J. Z. Blumoff, K. Chou, C. Shen, M. Reagor, C. Axline, R.T. Brierley, M. P. Silveri, C. Wang, B. Vlastakis, S. E. Nigg, L. Frunzio, M. H. Devoret, L. Jiang, S. M. Girvin, R. J. Schoelkopf
Implementing and characterizing precise multi-qubit measurements,
arXiv:1606.00817
Discussion leader: Chris.

Wednesday, July 20 2016
P. Kumar, S. Sendelbach, M. A. Beck, J. W. Freeland, Zhe Wang, Hui Wang, C. C. Yu, R. Q. Wu, D. P. Pappas, R. McDermott
Origin and Suppression of 1/f Magnetic Flux Noise,
arXiv:1604.00877
Discussion leader: Ale.

Wednesday, July 13 2016
R.-P. Riwar, A. Hosseinkhani, L. D. Burkhart, Y. Y. Gao, R. J. Schoelkopf, L. I. Glazman, G. Catelani
Normal-metal quasiparticle traps for superconducting qubits,
arXiv:1606.04591
Discussion leader: Thijs.

Wednesday, July 06 2016
M. Pechal, J.-C. Besse, M. Mondal, M. Oppliger, S. Gasparinetti, A. Wallraff
Superconducting switch for fast on-chip routing of quantum microwave fields,
arXiv:1606.01031
Discussion leader: Ramiro.

Wednesday, June 29 2016
P. Roushan, C. Neill, A. Megrant, Y. Chen, R. Babbush, R. Barends, B. Campbell, Z. Chen, B. Chiaro, A. Dunsworth, A. Fowler, E. Jeffrey, J. Kelly, E. Lucero, J. Mutus, P. J.J. O’Malley, M. Neeley, C. Quintana, D. Sank, A. Vainsencher, J. Wenner, T. White, E. Kapit, H. Neven, J. Martinis
Chiral groundstate currents of interacting photons in a synthetic magnetic field,
arXiv:1606.00077v2
Discussion leader: Marios.

Wednesday, June 22 2016
Y. Chu, C. Axline, C. Wang, T. Brecht, Y. Y. Gao, L. Frunzio, R.J. Schoelkopf
Suspending superconducting qubits by silicon micromachining,
arXiv:1606.02822
Discussion leader: Dave.

Wednesday, June 15 2016
Maika Takita, A. D. Córcoles, Easwar Magesan, Baleegh Abdo, Markus Brink, Andrew Cross, Jerry M. Chow, Jay M. Gambetta
Demonstration of weight-four parity measurements in the surface code architecture,
arXiv:1605.01351
Discussion leader: Stefano.

Wednesday, June 8 2016
Special topic journal club: “Calibration of Vector Network Analyzers”.
Discussion leader: Duije.

Wednesday, June 1 2016
C. Janvier, L. Tosi, L. Bretheau, Ç. Ö. Girit, M. Stern, P. Bertet, P. Joyez, D. Vion, D. Esteve, M. F. Goffman, H. Pothier, C. Urbina
Coherent manipulation of Andreev states in superconducting atomic contacts,
Science 349, 1199 (2015).
Discussion leader: Florian.

Wednesday, May 25 2016
Vittorio Peano, Martin Houde, Florian Marquardt, Aashish A. Clerk
Topological quantum fluctuations and travelling wave amplifiers,
arXiv:1604.04179
Discussion leader: Tom.

Wednesday, May 18 2016
H. Ball, W. D. Oliver, M. J. Biercuk
Upper-bounds on qubit coherence set by master clock instabilities,
arXiv:1602.04551
Discussion leader: Niels.

Wednesday, May 11 2016
Thomas Häner, Damian S. Steiger, Krysta Svore, Matthias Troyer
A Software Methodology for Compiling Quantum Programs,
arXiv:1604.01401v1
Discussion leader: Xiang.

Wednesday, May 4 2016
Robin Blume-Kohout, John King Gamble, Erik Nielsen, Jonathan Mizrahi, Jonathan D. Sterk, Peter Maunz
Robust, self-consistent, closed-form tomography of quantum logic gates on a trapped ion qubit,
arXiv:1310.4492
Discussion leader: Adriaan.

Wednesday, Apr 13 2016
A. Narla, S. Shankar, M. Hatridge, Z. Leghtas, K. M. Sliwa, E. Zalys-Geller, S. O. Mundhada, W. Pfaff, L. Frunzio, R. J. Schoelkopf, M. H. Devoret
Robust concurrent remote entanglement between two superconducting qubits,
arXiv:1603.03742
Discussion leader: Leo.

Wednesday, Mar 30 2016
P. J. J. O’Malley, R. Babbush, I. D. Kivlichan, J. Romero, J. R. McClean, R. Barends, J. Kelly, P. Roushan, A. Tranter, N. Ding, B. Campbell, Y. Chen, Z. Chen, B. Chiaro, A. Dunsworth, A. G. Fowler, E. Jeffrey, A. Megrant, J. Y. Mutus, C. Neill, C. Quintana, D. Sank, A. Vainsencher, J. Wenner, T. C. White, P. V. Coveney, P. J. Love, H. Neven, A. Aspuru-Guzik, J. M. Martinis
Scalable Quantum Simulation of Molecular Energies,
arXiv:1512.06860
Discussion leader: Nathan.

Wednesday, Mar 23 2016
J. Kelly, R. Barends, A. G. Fowler, A. Megrant, E. Jeffrey, T. C. White, D. Sank, J. Y. Mutus, B. Campbell, Yu Chen, Z. Chen, B. Chiaro, A. Dunsworth, E. Lucero, M. Neeley, C. Neill, P. J. J. O’Malley, C. Quintana, P. Roushan, A. Vainsencher, J. Wenner, John M. Martinis
Scalable in-situ qubit calibration during repetitive error detection,
arXiv:1603.03082
Discussion leader: Wouter.

Wednesday, Mar 9 2016
Kunihiro Inomata, Zhirong Lin, Kazuki Koshino, William D. Oliver, Jaw-Shen Tsai, Tsuyoshi Yamamoto, Yasunobu Nakamura
Single microwave-photon detector using an artificial Λ-type three-level system,
arXiv:1601.05513
Discussion leader: Chris.

Wednesday, Feb 24 2016
M. E. Schwartz, L. Martin, E. Flurin, C. Aron, M. Kulkarni, H. E. Tureci, I. Siddiqi
Stabilizing entanglement via symmetry-selective bath engineering in superconducting qubits,
arXiv:1511.00702v1
Discussion leader: Sarwan.

Wednesday, Feb 17 2016
L. Casparis, T. W. Larsen, M. S. Olsen, F. Kuemmeth, P. Krogstrup, J. Nygård, K. D. Petersson, C. M. Marcus
Gatemon Benchmarking and Two-Qubit Operation,
arXiv:1512.09195
Discussion leader: Thijs.

Wednesday, Feb 10 2016
P. Forn-Díaz, J. J. García-Ripoll, B. Peropadre, M. A. Yurtalan, J.-L. Orgiazzi, R. Belyansky, C. M. Wilson, A. Lupascu
Ultrastrong coupling of a single artificial atom to an electromagnetic continuum,
arXiv:1602.00416
&
Fumiki Yoshihara, Tomoko Fuse, Sahel Ashhab, Kosuke Kakuyanagi, Shiro Saito, Kouichi Semba
Superconducting qubit-oscillator circuit beyond the ultrastrong-coupling regime,
arXiv:1602.00415.
Discussion leader: Marios.

Wednesday, Feb 3 2016
John M. Martinis, Michael R. Geller
Fast adiabatic qubit gates using only σz control,
Phys. Rev. A 90, 022307 (2014).
Discussion leader: Ramiro.

Wednesday, Jan 13 2016
C. Wang, C. Axline, Y. Y. Gao, T. Brecht, Y. Chu, L. Frunzio, M. H. Devoret, and R. J. Schoelkopf
Surface participation and dielectric loss in superconducting qubits,
Appl. Phys. Lett. 107, 162601 (2015).
Discussion leader: Stefano.

Wednesday, Jan 6 2016
Special topic journal club on PCB design and fabrication.
Discussion leader: Duije.