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Book ; Online: Superconducting qubits as musical synthesizers for live performance

Topel, Spencer / Serniak, Kyle / Burkhart, Luke / Carle, Florian

2022

Abstract: In the frame of a year-long artistic residency at the Yale Quantum Institute in 2019, artist and technologist Spencer Topel and quantum physicists Kyle Serniak and Luke Burkhart collaborated to create Quantum Sound, the first-ever music created and ... ...

Abstract	In the frame of a year-long artistic residency at the Yale Quantum Institute in 2019, artist and technologist Spencer Topel and quantum physicists Kyle Serniak and Luke Burkhart collaborated to create Quantum Sound, the first-ever music created and performed directly from measurements of superconducting quantum devices. Using analog- and digital-signal-processing sonification techniques, the team transformed GHz-frequency signals from experiments inside dilution refrigerators into audible sounds. The project was performed live at the International Festival of Arts and Ideas in New Haven, Connecticut on June 14, 2019 as a structured improvisation using the synthesis methods described in this chapter. At the interface between research and art, Quantum Sound represents an earnest attempt to produce a sonic reflection of the quantum realm. Comment: Unedited pre-publication version of a chapter which will appear in the book "Quantum Computer Music", Miranda, E. R. (Editor)
Keywords	Quantum Physics ; Computer Science - Sound ; Electrical Engineering and Systems Science - Audio and Speech Processing
Subject code	780
Publishing date	2022-03-11
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Photon-Assisted Charge-Parity Jumps in a Superconducting Qubit.

Houzet, M / Serniak, K / Catelani, G / Devoret, M H / Glazman, L I

Physical review letters

2019 Volume 123, Issue 10, Page(s) 107704

Abstract: We evaluate the rates of energy and phase relaxation of a superconducting qubit caused by stray photons with energy exceeding the threshold for breaking a Cooper pair. All channels of relaxation within this mechanism are associated with the change in the ...

Abstract	We evaluate the rates of energy and phase relaxation of a superconducting qubit caused by stray photons with energy exceeding the threshold for breaking a Cooper pair. All channels of relaxation within this mechanism are associated with the change in the charge parity of the qubit, enabling the separation of the photon-assisted processes from other contributions to the relaxation rates. Among the signatures of the new mechanism is the same order of rates of the transitions in which a qubit loses or gains energy, which is in agreement with recent experiments. Our theory offers the possibility to characterize the electromagnetic environment of superconducting devices at the single-photon level for frequencies above the superconducting gap.
Language	English
Publishing date	2019-09-12
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.123.107704
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Article ; Online: Coherent manipulation of an Andreev spin qubit.

Hays, M / Fatemi, V / Bouman, D / Cerrillo, J / Diamond, S / Serniak, K / Connolly, T / Krogstrup, P / Nygård, J / Levy Yeyati, A / Geresdi, A / Devoret, M H

Science (New York, N.Y.)

2021 Volume 373, Issue 6553, Page(s) 430–433

Abstract: Two promising architectures for solid-state quantum information processing are based on electron spins electrostatically confined in semiconductor quantum dots and the collective electrodynamic modes of superconducting circuits. Superconducting ... ...

Abstract	Two promising architectures for solid-state quantum information processing are based on electron spins electrostatically confined in semiconductor quantum dots and the collective electrodynamic modes of superconducting circuits. Superconducting electrodynamic qubits involve macroscopic numbers of electrons and offer the advantage of larger coupling, whereas semiconductor spin qubits involve individual electrons trapped in microscopic volumes but are more difficult to link. We combined beneficial aspects of both platforms in the Andreev spin qubit: the spin degree of freedom of an electronic quasiparticle trapped in the supercurrent-carrying Andreev levels of a Josephson semiconductor nanowire. We performed coherent spin manipulation by combining single-shot circuit-quantum-electrodynamics readout and spin-flipping Raman transitions and found a spin-flip time
Language	English
Publishing date	2021-07-22
Publishing country	United States
Document type	Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, Non-U.S. Gov't
ZDB-ID	128410-1
ISSN	1095-9203 ; 0036-8075
ISSN (online)	1095-9203
ISSN	0036-8075
DOI	10.1126/science.abf0345
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Zs.MG 77: Show issues

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Article ; Online: Hot Nonequilibrium Quasiparticles in Transmon Qubits.

Serniak, K / Hays, M / de Lange, G / Diamond, S / Shankar, S / Burkhart, L D / Frunzio, L / Houzet, M / Devoret, M H

Physical review letters

2018 Volume 121, Issue 15, Page(s) 157701

Abstract: Nonequilibrium quasiparticle excitations degrade the performance of a variety of superconducting circuits. Understanding the energy distribution of these quasiparticles will yield insight into their generation mechanisms, the limitations they impose on ... ...

Abstract	Nonequilibrium quasiparticle excitations degrade the performance of a variety of superconducting circuits. Understanding the energy distribution of these quasiparticles will yield insight into their generation mechanisms, the limitations they impose on superconducting devices, and how to efficiently mitigate quasiparticle-induced qubit decoherence. To probe this energy distribution, we systematically correlate qubit relaxation and excitation with charge-parity switches in an offset-charge-sensitive transmon qubit, and find that quasiparticle-induced excitation events are the dominant mechanism behind the residual excited-state population in our samples. By itself, the observed quasiparticle distribution would limit T_{1} to ≈200 μs, which indicates that quasiparticle loss in our devices is on equal footing with all other loss mechanisms. Furthermore, the measured rate of quasiparticle-induced excitation events is greater than that of relaxation events, which signifies that the quasiparticles are more energetic than would be predicted from a thermal distribution describing their apparent density.
Language	English
Publishing date	2018-10-26
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.121.157701
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Article ; Online: Probing entanglement in a 2D hard-core Bose-Hubbard lattice.

Karamlou, Amir H / Rosen, Ilan T / Muschinske, Sarah E / Barrett, Cora N / Di Paolo, Agustin / Ding, Leon / Harrington, Patrick M / Hays, Max / Das, Rabindra / Kim, David K / Niedzielski, Bethany M / Schuldt, Meghan / Serniak, Kyle / Schwartz, Mollie E / Yoder, Jonilyn L / Gustavsson, Simon / Yanay, Yariv / Grover, Jeffrey A / Oliver, William D

Nature

2024

Abstract: Entanglement and its propagation are central to understanding many physical properties of quantum ... ...

Abstract	Entanglement and its propagation are central to understanding many physical properties of quantum systems
Language	English
Publishing date	2024-04-24
Publishing country	England
Document type	Journal Article
ZDB-ID	120714-3
ISSN	1476-4687 ; 0028-0836
ISSN (online)	1476-4687
ISSN	0028-0836
DOI	10.1038/s41586-024-07325-z
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Article ; Online: Direct Microwave Measurement of Andreev-Bound-State Dynamics in a Semiconductor-Nanowire Josephson Junction.

Hays, M / de Lange, G / Serniak, K / van Woerkom, D J / Bouman, D / Krogstrup, P / Nygård, J / Geresdi, A / Devoret, M H

Physical review letters

2018 Volume 121, Issue 4, Page(s) 47001

Abstract: The modern understanding of the Josephson effect in mesosopic devices derives from the physics of Andreev bound states, fermionic modes that are localized in a superconducting weak link. Recently, Josephson junctions constructed using semiconducting ... ...

Abstract	The modern understanding of the Josephson effect in mesosopic devices derives from the physics of Andreev bound states, fermionic modes that are localized in a superconducting weak link. Recently, Josephson junctions constructed using semiconducting nanowires have led to the realization of superconducting qubits with gate-tunable Josephson energies. We have used a microwave circuit QED architecture to detect Andreev bound states in such a gate-tunable junction based on an aluminum-proximitized indium arsenide nanowire. We demonstrate coherent manipulation of these bound states, and track the bound-state fermion parity in real time. Individual parity-switching events due to nonequilibrium quasiparticles are observed with a characteristic timescale T_{parity}=160±10 μs. The T_{parity} of a topological nanowire junction sets a lower bound on the bandwidth required for control of Majorana bound states.
Language	English
Publishing date	2018-07-27
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.121.047001
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Article ; Online: Evolution of 1/f Flux Noise in Superconducting Qubits with Weak Magnetic Fields.

Physical review letters

2023 Volume 130, Issue 22, Page(s) 220602

Abstract: The microscopic description of 1/f magnetic flux noise in superconducting circuits has remained an open question for several decades despite extensive experimental and theoretical investigation. Recent progress in superconducting devices for quantum ... ...

Abstract	The microscopic description of 1/f magnetic flux noise in superconducting circuits has remained an open question for several decades despite extensive experimental and theoretical investigation. Recent progress in superconducting devices for quantum information has highlighted the need to mitigate sources of qubit decoherence, driving a renewed interest in understanding the underlying noise mechanism(s). Though a consensus has emerged attributing flux noise to surface spins, their identity and interaction mechanisms remain unclear, prompting further study. Here, we apply weak in-plane magnetic fields to a capacitively shunted flux qubit (where the Zeeman splitting of surface spins lies below the device temperature) and study the flux-noise-limited qubit dephasing, revealing previously unexplored trends that may shed light on the dynamics behind the emergent 1/f noise. Notably, we observe an enhancement (suppression) of the spin-echo (Ramsey) pure-dephasing time in fields up to B=100 G. With direct noise spectroscopy, we further observe a transition from a 1/f to approximately Lorentzian frequency dependence below 10 Hz and a reduction of the noise above 1 MHz with increasing magnetic field. We suggest that these trends are qualitatively consistent with an increase of spin cluster sizes with magnetic field. These results should help to inform a complete microscopic theory of 1/f flux noise in superconducting circuits.
MeSH term(s)	Magnetic Fields ; Temperature
Language	English
Publishing date	2023-06-16
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.130.220602
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Article ; Online: Dark matter axion search using a Josephson Traveling wave parametric amplifier.

Bartram, C / Braine, T / Cervantes, R / Crisosto, N / Du, N / Leum, G / Mohapatra, P / Nitta, T / Rosenberg, L J / Rybka, G / Yang, J / Clarke, John / Siddiqi, I / Agrawal, A / Dixit, A V / Awida, M H / Chou, A S / Hollister, M / Knirck, S /

Sonnenschein, A / Wester, W / Gleason, J R / Hipp, A T / Jois, S / Sikivie, P / Sullivan, N S / Tanner, D B / Lentz, E / Khatiwada, R / Carosi, G / Cisneros, C / Robertson, N / Woollett, N / Duffy, L D / Boutan, C / Jones, M / LaRoque, B H / Oblath, N S / Taubman, M S / Daw, E J / Perry, M G / Buckley, J H / Gaikwad, C / Hoffman, J / Murch, K / Goryachev, M / McAllister, B T / Quiskamp, A / Thomson, C / Tobar, M E / Bolkhovsky, V / Calusine, G / Oliver, W / Serniak, K

The Review of scientific instruments

2023 Volume 94, Issue 4

Abstract: We describe the first implementation of a Josephson Traveling Wave Parametric Amplifier (JTWPA) in an axion dark matter search. The operation of the JTWPA for a period of about two weeks achieved sensitivity to axion-like particle dark matter with axion- ... ...

Abstract	We describe the first implementation of a Josephson Traveling Wave Parametric Amplifier (JTWPA) in an axion dark matter search. The operation of the JTWPA for a period of about two weeks achieved sensitivity to axion-like particle dark matter with axion-photon couplings above 10-13 Ge V-1 over a narrow range of axion masses centered around 19.84 µeV by tuning the resonant frequency of the cavity over the frequency range of 4796.7-4799.5 MHz. The JTWPA was operated in the insert of the axion dark matter experiment as part of an independent receiver chain that was attached to a 0.56-l cavity. The ability of the JTWPA to deliver high gain over a wide (3 GHz) bandwidth has engendered interest from those aiming to perform broadband axion searches, a longstanding goal in this field.
Language	English
Publishing date	2023-12-12
Publishing country	United States
Document type	Journal Article
ZDB-ID	209865-9
ISSN	1089-7623 ; 0034-6748
ISSN (online)	1089-7623
ISSN	0034-6748
DOI	10.1063/5.0122907
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Article ; Online: Demonstration of Tunable Three-Body Interactions between Superconducting Qubits.

Menke, Tim / Banner, William P / Bergamaschi, Thomas R / Di Paolo, Agustin / Vepsäläinen, Antti / Weber, Steven J / Winik, Roni / Melville, Alexander / Niedzielski, Bethany M / Rosenberg, Danna / Serniak, Kyle / Schwartz, Mollie E / Yoder, Jonilyn L / Aspuru-Guzik, Alán / Gustavsson, Simon / Grover, Jeffrey A / Hirjibehedin, Cyrus F / Kerman, Andrew J / Oliver, William D

Physical review letters

2022 Volume 129, Issue 22, Page(s) 220501

Abstract: Nonpairwise multiqubit interactions present a useful resource for quantum information processors. Their implementation would facilitate more efficient quantum simulations of molecules and combinatorial optimization problems, and they could simplify error ...

Abstract	Nonpairwise multiqubit interactions present a useful resource for quantum information processors. Their implementation would facilitate more efficient quantum simulations of molecules and combinatorial optimization problems, and they could simplify error suppression and error correction schemes. Here, we present a superconducting circuit architecture in which a coupling module mediates two-local and three-local interactions between three flux qubits by design. The system Hamiltonian is estimated via multiqubit pulse sequences that implement Ramsey-type interferometry between all neighboring excitation manifolds in the system. The three-local interaction is coherently tunable over several MHz via the coupler flux biases and can be turned off, which is important for applications in quantum annealing, analog quantum simulation, and gate-model quantum computation.
Language	English
Publishing date	2022-12-10
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.129.220501
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Article: Hexagonal boron nitride as a low-loss dielectric for superconducting quantum circuits and qubits.

Nature materials

2022 Volume 21, Issue 4, Page(s) 398–403

Abstract: Dielectrics with low loss at microwave frequencies are imperative for high-coherence solid-state quantum computing platforms. Here we study the dielectric loss of hexagonal boron nitride (hBN) thin films in the microwave regime by measuring the quality ... ...

Abstract	Dielectrics with low loss at microwave frequencies are imperative for high-coherence solid-state quantum computing platforms. Here we study the dielectric loss of hexagonal boron nitride (hBN) thin films in the microwave regime by measuring the quality factor of parallel-plate capacitors (PPCs) made of NbSe
Language	English
Publishing date	2022-01-27
Publishing country	England
Document type	Journal Article
ZDB-ID	2088679-2
ISSN	1476-4660 ; 1476-1122
ISSN (online)	1476-4660
ISSN	1476-1122
DOI	10.1038/s41563-021-01187-w
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