96 citations · 490 across the 19 of their papers we have counts for
19 papers
Precision quantum simulation of magnon spectra and interactions
Trond I. Andersen, Nikita Astrakhantsev, Jeronimo Martinez +329
Quantum simulation promises to advance materials discovery by accurately simulating complex states of matter, their microscopic excitations, and macroscopic response functions. The…
Measurement-induced state transitions in dispersive qubit readout schemes
Konstantin N. Nesterov, Ivan V. Pechenezhskiy
The dispersive-readout scheme enables quantum nondemolition measurement of superconducting qubits. An increased readout power can shorten the readout time and reduce the state disc…
Voltage Activated Parametric Entangling Gates on Gatemons
Yinqi Chen, Konstantin N. Nesterov, Hugh Churchill +3
We describe the generation of entangling gates on superconductor-semiconductor hybrid qubits by ac voltage modulation of the Josephson energy. Our numerical simulations demonstrate…
Anomalous Josephson effect in planar noncentrosymmetric superconducting devices
Jaglul Hasan, Konstantin N. Nesterov, Songci Li +3
In two-dimensional electron systems with broken inversion and time-reversal symmetries, a Josephson junction reveals an anomalous response: the supercurrent is nonzero even at zero…
Demonstration of the Two-Fluxonium Cross-Resonance Gate
Ebru Dogan, Dario Rosenstock, Loïck Le Guevel +7
The superconducting fluxonium qubit has a great potential for high-fidelity quantum gates with its long coherence times and strong anharmonicity at the half flux quantum sweet spot…
Scalable High-Performance Fluxonium Quantum Processor
Long B. Nguyen, Gerwin Koolstra, Yosep Kim +12
The technological development of hardware heading toward universal fault-tolerant quantum computation requires a large-scale processing unit with high performance. While fluxonium…
CNOT gates for fluxonium qubits via selective darkening of transitions
Konstantin N. Nesterov, Chen Wang, Vladimir E. Manucharyan +1
We analyze the cross-resonance effect for fluxonium circuits and investigate a two-qubit gate scheme based on selective darkening of a transition. In this approach, two microwave p…
Fast Flux Entangling Gate for Fluxonium Circuits
Yinqi Chen, Konstantin N. Nesterov, Vladimir E. Manucharyan +1
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 l…
Arbitrary controlled-phase gate on fluxonium qubits using differential ac-Stark shifts
Haonan Xiong, Quentin Ficheux, Aaron Somoroff +7
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 superconduc…
Fast logic with slow qubits: microwave-activated controlled-Z gate on low-frequency fluxoniums
Quentin Ficheux, Long B. Nguyen, Aaron Somoroff +4
We demonstrate a controlled-Z gate between capacitively coupled fluxonium qubits with transition frequencies and . The gate is activated by…
Proposal for entangling gates on fluxonium qubits via a two-photon transition
Konstantin N. Nesterov, Quentin Ficheux, Vladimir E. Manucharyan +1
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-fre…
Counting statistics of microwave photons in circuit QED
Konstantin N. Nesterov, Ivan V. Pechenezhskiy, Maxim G. Vavilov
In superconducting circuit architectures for quantum computing, microwave resonators are often used both to isolate qubits from the electromagnetic environment and to facilitate qu…
Measurement of a Superconducting Qubit with a Microwave Photon Counter
A. Opremcak, I. V. Pechenezhskiy, C. Howington +12
Fast, high-fidelity measurement is a key ingredient for quantum error correction. Conventional approaches to the measurement of superconducting qubits, involving linear amplificati…
Microwave-Activated Controlled-Z Gate for Fixed-Frequency Fluxonium Qubits
Konstantin N. Nesterov, Ivan V. Pechenezhskiy, Chen Wang +2
The superconducting fluxonium circuit is an artificial atom with a strongly anharmonic spectrum: when biased at a half flux quantum, the lowest qubit transition is an order of magn…
Spin-orbit scattering in superconducting nanoparticles
Y. Alhassid, K. N. Nesterov
We review interaction effects in chaotic metallic nanoparticles. Their single-particle Hamiltonian is described by the proper random-matrix ensemble while the dominant interaction…
Anomalous Josephson effect in semiconducting nanowires as a signature of the topologically nontrivial phase
Konstantin N. Nesterov, Manuel Houzet, Julia S. Meyer
We study Josephson junctions made of semiconducting nanowires with Rashba spin-orbit coupling, where superconducting correlations are induced by the proximity effect. In the presen…
Magnetic response of energy levels of superconducting nanoparticles with spin-orbit scattering
Konstantin N. Nesterov, Y. Alhassid
Discrete energy levels of ultrasmall metallic grains are extracted in single-electron-tunneling-spectroscopy experiments. We study the response of these energy levels to an externa…
The coexistence of superconductivity and ferromagnetism in nano-scale metallic grains
Y. Alhassid, K. N. Nesterov, S. Schmidt
A nano-scale metallic grain in which the single-particle dynamics are chaotic is described by the so-called universal Hamiltonian. This Hamiltonian includes a superconducting pairi…
Thermodynamics of ultrasmall metallic grains in the presence of pairing and exchange correlations: Mesoscopic fluctuations
Konstantin N. Nesterov, Y. Alhassid
We study the mesoscopic fluctuations of thermodynamic observables in a nanosized metallic grain in which the single-particle dynamics are chaotic and the dimensionless Thouless con…