R
Robert Schoelkopf
Researcher at Yale University
Publications - 324
Citations - 48201
Robert Schoelkopf is an academic researcher from Yale University. The author has contributed to research in topics: Qubit & Quantum computer. The author has an hindex of 95, co-authored 312 publications receiving 40906 citations. Previous affiliations of Robert Schoelkopf include Massachusetts Institute of Technology & California Institute of Technology.
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Journal ArticleDOI
Quasiparticle relaxation of superconducting qubits in the presence of flux
Gianluigi Catelani,Jens Koch,Luigi Frunzio,Robert Schoelkopf,Michel Devoret,Leonid I. Glazman +5 more
TL;DR: In this article, a general theory of the corresponding decay rate in a qubit controlled by a magnetic flux was developed, which is applicable for an arbitrary quasiparticle distribution.
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Josephson directional amplifier for quantum measurement of superconducting circuits.
B. Abdo,K. Sliwa,Shyam Shankar,Michael Hatridge,Luigi Frunzio,Robert Schoelkopf,Michel Devoret +6 more
TL;DR: A microwave quantum-limited amplifier that is directional and can therefore function without the front circulator needed in many quantum measurements is realized, and the qubit and preamplifer could be integrated on the same chip.
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Non-Poissonian Quantum Jumps of a Fluxonium Qubit due to Quasiparticle Excitations
Uri Vool,Ioan Pop,K. Sliwa,B. Abdo,Chen Wang,T. Brecht,Yvonne Y. Gao,Shyam Shankar,Michael Hatridge,Gianluigi Catelani,Mazyar Mirrahimi,Luigi Frunzio,Robert Schoelkopf,Leonid I. Glazman,Michel Devoret +14 more
TL;DR: The quantum jump statistics switches between the expected Poisson distribution and a non-Poissonian one, indicating large relative fluctuations in the quasiparticle population, on time scales varying from seconds to hours.
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Photon Shot Noise Dephasing in the Strong-Dispersive Limit of Circuit QED
Adam Sears,Andrei Petrenko,Gianluigi Catelani,Luyan Sun,Hanhee Paik,Gerhard Kirchmair,Luigi Frunzio,Leonid I. Glazman,Steven Girvin,Robert Schoelkopf +9 more
TL;DR: In this paper, the photon shot noise dephasing of a superconducting transmon qubit in the strong-dispersive limit was studied, and it was shown that the intrinsic coherence of small Josephson junctions when corrected with a single Hahn echo is greater than several hundred microseconds.
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Life after charge noise: recent results with transmon qubits
TL;DR: The increased ratio of the Josephson to charging energy results in an exponential suppression of the transmon’s sensitivity to 1/f charge noise, which yields homogeneous broadening, negligible pure dephasing, and long coherence times of up to 3 μs.