Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Vladimir E, Manucharyan"'
Publikováno v:
PRX Quantum, Vol 5, Iss 4, p 040318 (2024)
We describe a superconducting qubit derived from operating a properly designed fluxonium circuit in a zero magnetic field. The qubit has a frequency of about 4 GHz and an energy relaxation quality factor Q≈0.7×10^{7}, even though the dielectric lo
Externí odkaz:
https://doaj.org/article/3d8ac6cd3177477e9fb40ccb3a7180d1
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-6 (2021)
Existing schemes for coherent control and measurements in superconducting circuits rely on the coupling between superconducting qubits and cavity photons. Here the authors implement conditional fluorescence readout of a fluxonium qubit placed inside
Externí odkaz:
https://doaj.org/article/fed72efd15e347139a8bd6dbfc7aaa4f
Autor:
Haonan Xiong, Quentin Ficheux, Aaron Somoroff, Long B. Nguyen, Ebru Dogan, Dario Rosenstock, Chen Wang, Konstantin N. Nesterov, Maxim G. Vavilov, Vladimir E. Manucharyan
Publikováno v:
Physical Review Research, Vol 4, Iss 2, p 023040 (2022)
Large scale quantum computing motivates the invention of two-qubit gate schemes that not only maximize the gate fidelity but also draw minimal resources. In the case of superconducting qubits, the weak anharmonicity of transmons imposes profound cons
Externí odkaz:
https://doaj.org/article/86e298d465e9467db044df66c10ffff9
Publikováno v:
PRX Quantum, Vol 2, Iss 2, p 020345 (2021)
We propose a family of microwave-activated entangling gates on two capacitively coupled fluxonium qubits. A microwave pulse applied to either qubit at a frequency near the half-frequency of the |00⟩-|11⟩ transition induces two-photon Rabi oscilla
Externí odkaz:
https://doaj.org/article/06cbb41d49bb4745a7909538cce44446
Autor:
Quentin Ficheux, Long B. Nguyen, Aaron Somoroff, Haonan Xiong, Konstantin N. Nesterov, Maxim G. Vavilov, Vladimir E. Manucharyan
Publikováno v:
Physical Review X, Vol 11, Iss 2, p 021026 (2021)
We demonstrate a controlled-Z gate between capacitively coupled fluxonium qubits with transition frequencies 72.3 and 136.3 MHz. The gate is activated by a 61.6-ns-long pulse at a frequency between noncomputational transitions |10⟩-|20⟩ and |11
Externí odkaz:
https://doaj.org/article/25e56d548f74432b9b79eb9e361e537e
Autor:
Natalia Pankratova, Hanho Lee, Roman Kuzmin, Kaushini Wickramasinghe, William Mayer, Joseph Yuan, Maxim G. Vavilov, Javad Shabani, Vladimir E. Manucharyan
Publikováno v:
Physical Review X, Vol 10, Iss 3, p 031051 (2020)
We report a probable observation of the dc Josephson effect in mesoscopic junctions of three and four superconductors. The devices are fabricated in a top-down fashion from a hybrid semiconductor-superconductor InAs/Al epitaxial heterostructure. In g
Externí odkaz:
https://doaj.org/article/7f6f228d7fc1498c80ad7441fbf8dccb
Publikováno v:
Physical Review Applied. 18
We analyze a high-fidelity two-qubit gate using fast flux pulses on superconducting fluxonium qubits. The gate is realized by temporarily detuning magnetic flux through fluxonium loop away from the half flux quantum sweet spot. We simulate dynamics o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58ee65cc83030385fa11105895c101f9
https://doi.org/10.1103/physrevapplied.18.034027
https://doi.org/10.1103/physrevapplied.18.034027
Autor:
Long B. Nguyen, Yen-Hsiang Lin, Aaron Somoroff, Raymond Mencia, Nicholas Grabon, Vladimir E. Manucharyan
Publikováno v:
Physical Review X, Vol 9, Iss 4, p 041041 (2019)
We report superconducting fluxonium qubits with coherence times largely limited by energy relaxation and reproducibly satisfying T_{2}>100 μs (T_{2}>400 μs in one device). Moreover, given the state-of-the-art values of the surface loss tangent and
Externí odkaz:
https://doaj.org/article/5428f76bd89248afa66cc55e604b8de1
Publikováno v:
arXiv
Decay of a particle into more particles is a ubiquitous phenomenon to interacting quantum systems, taking place in colliders, nuclear reactors, or solids. In a non-linear medium, even a single photon would decay by down-converting (splitting) into lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::052cf1f7db845689c48bccd1f25c2cd3
Autor:
William M. Strickland, Bassel Heiba Elfeky, Joseph O’Connell Yuan, William F. Schiela, Peng Yu, Dylan Langone, Maxim G. Vavilov, Vladimir E. Manucharyan, Javad Shabani
Voltage-tunable superconductor-semiconductor devices offer a unique platform to realize dynamic tunability in superconducting quantum circuits. By galvanically connecting a gated InAs-Al Josephson junction to a coplanar waveguide resonator, we demons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ace36bb392422c9b776c8901159efa4