Results 1 to 10 of about 50,247 (209)

Methods to achieve near-millisecond energy relaxation and dephasing times for a superconducting transmon qubit [PDF]

open access: yesNature Communications
Superconducting qubits are one of the most promising physical systems for implementing quantum computers. However, executing quantum algorithms of practical computational advantage requires further improvements in the fidelities of qubit operations ...
Mikko Tuokkola   +8 more
doaj   +2 more sources

Topologically protected vortex knots and links

open access: yesCommunications Physics, 2022
Ordered materials, such as liquid crystals and Bose-Einstein condensates, support topological vortices, which are analogous to vortices in water, but have qualitatively different properties.
Toni Annala   +2 more
doaj   +1 more source

Microwave response of a metallic superconductor subject to a high-voltage gate electrode

open access: yesScientific Reports, 2022
Processes that lead to the critical-current suppression and change of impedance of a superconductor under the application of an external voltage is an active area of research, especially due to various possible technological applications.
Giacomo Catto   +5 more
doaj   +1 more source

Unimon qubit

open access: yesNature Communications, 2022
While transmon is the most widely used superconducting qubit, the search for alternative qubit designs with improved characteristic is ongoing. Hyyppä et al.
Eric Hyyppä   +24 more
doaj   +1 more source

Single-junction quantum-circuit refrigerator

open access: yesAIP Advances, 2022
We propose a quantum-circuit refrigerator (QCR) based on photon-assisted quasiparticle tunneling through a single normal-metal–insulator–superconductor (NIS) junction.
V. Vadimov   +4 more
doaj   +1 more source

Progress on QCD properties in strong magnetic fields from lattice QCD

open access: yesHe jishu, 2023
We review the current status of quantum chromodynamics (QCD) properties in strong magnetic fields from lattice QCD. After a general introduction, we briefly present the implementation of a background magnetic field onto a lattice and discuss the recent ...
DING Hengtong, LI Shengtai, LIU Junhong
doaj   +1 more source

Observation of an Alice ring in a Bose–Einstein condensate

open access: yesNature Communications, 2023
Monopoles and vortices are fundamental topological excitations that appear in physical systems spanning enormous scales of size and energy, from the vastness of the early universe to tiny laboratory droplets of nematic liquid crystals and ultracold gases.
Alina Blinova   +5 more
doaj   +1 more source

Thoughts about the utility of perturbative QCD in the cores of neutron stars – contribution to a roundtable discussion on neutron stars and QCD [PDF]

open access: yesEPJ Web of Conferences, 2022
In this contribution, I discuss the utility that perturbative QCD offers in studying the matter in the cores of neutron stars. I discuss the reasons why perturbative QCD can constrain the equation of state at densities far below the densities where we ...
Kurkela Aleksi
doaj   +1 more source

Quantum-circuit refrigerator

open access: yesNature Communications, 2017
Efficient on-demand cooling of the functional degrees of freedom in solid-state implementations of quantum information processing devices remains a challenge.
Kuan Yen Tan   +5 more
doaj   +1 more source

Assessment of weak-coupling approximations on a driven two-level system under dissipation

open access: yesNew Journal of Physics, 2021
The standard weak-coupling approximations associated to open quantum systems have been extensively used in the description of a two-level quantum system, qubit, subjected to relatively weak dissipation compared with the qubit frequency.
W S Teixeira   +3 more
doaj   +1 more source

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