Quantifying the effects of dissipation and temperature on dynamics of a
superconducting qubit-cavity system
- URL: http://arxiv.org/abs/2207.04619v1
- Date: Mon, 11 Jul 2022 04:44:28 GMT
- Title: Quantifying the effects of dissipation and temperature on dynamics of a
superconducting qubit-cavity system
- Authors: Prashant Shukla
- Abstract summary: superconducting circuits involving Josephson junction offer macroscopic quantum two-level system (qubit)
We study the dynamics of superconducting qubits coupled to a cavity with including dissipation in a subkelvin temperature domain.
- Score: 0.6091702876917281
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: The superconducting circuits involving Josephson junction offer macroscopic
quantum two-level system (qubit) which are coupled to cavity resonators and are
operated via microwave signals. In this work, we study the dynamics of
superconducting qubits coupled to a cavity with including dissipation in a
subkelvin temperature domain. In the first step, a classical Finite Element
Method is used to simulate the cavities and basic circuit elements to model
Josephson junctions. Then the quantization of the circuit is done to obtain the
full Hamiltonian of the system using energy partition ratios of the junctions.
Once the parameters of Hamiltonian are obtained, the dynamics is studied via
Lindblad equation for an open quantum system using a realistic set of
dissipative parameters and include temperature effects. Finally, we get
frequency spectra and/or dynamics of the system with time which have quantum
imprints. Such devices work at tens of milli Kelvins and we search for a set of
parameters which could enable to observe quantum behaviour at temperatures as
high as 1 K.
Related papers
- Slow Relaxation in a Glassy Quantum Circuit [0.0]
We introduce and analyze a Floquet random quantum circuit that can be tuned between glassy and fully ergodic behavior.
Using an effective field theory for random quantum circuits, we analyze the correlations between quasienergy eigenstates.
We show that the ramp of the spectral form factor is enhanced by a factor of the number of sectors in the glassy regime.
arXiv Detail & Related papers (2024-10-30T17:58:08Z) - Simulating electron-vibron energy transfer with quantum dots and resonators [0.0]
Gateable semiconductor quantum dots (QDs) provide a versatile platform for analog quantum simulations.
We represent the molecular vibrational modes by single-mode microwave resonators coupled capacitively to the QDs.
We study the gate-tunable energy transfer from a voltage-biased triple quantum dot (TQD) system to a single damped resonator mode.
arXiv Detail & Related papers (2024-07-03T14:35:17Z) - Thermalization and Criticality on an Analog-Digital Quantum Simulator [133.58336306417294]
We present a quantum simulator comprising 69 superconducting qubits which supports both universal quantum gates and high-fidelity analog evolution.
We observe signatures of the classical Kosterlitz-Thouless phase transition, as well as strong deviations from Kibble-Zurek scaling predictions.
We digitally prepare the system in pairwise-entangled dimer states and image the transport of energy and vorticity during thermalization.
arXiv Detail & Related papers (2024-05-27T17:40:39Z) - Quantum State Transfer in Interacting, Multiple-Excitation Systems [41.94295877935867]
Quantum state transfer (QST) describes the coherent passage of quantum information from one node to another.
We describe Monte Carlo techniques which enable the discovery of a Hamiltonian that gives high-fidelity QST.
The resulting Jaynes-Cummings-Hubbard and periodic Anderson models can, in principle, be engineered in appropriate hardware to give efficient QST.
arXiv Detail & Related papers (2024-05-10T23:46:35Z) - A novel scheme for modelling dissipation or thermalization in open quantum systems [0.0]
We introduce a novel method for investigating dissipation (gain) and thermalization in an open quantum system.
To demonstrate the efficiency and significance of the method, we apply it to some ubiquitous open quantum systems.
arXiv Detail & Related papers (2024-04-16T05:20:30Z) - Quench dynamics in higher-dimensional Holstein models: Insights from Truncated Wigner Approaches [41.94295877935867]
We study the melting of charge-density waves in a Holstein model after a sudden switch-on of the electronic hopping.
A comparison with exact data obtained for a Holstein chain shows that a semiclassical treatment of both the electrons and phonons is required in order to correctly describe the phononic dynamics.
arXiv Detail & Related papers (2023-12-19T16:14:01Z) - Heating and cooling processes via phaseonium-driven dynamics of cascade systems [0.0]
We study the dynamics of a system made of a pair of quantum harmonic oscillators, represented by single-mode cavity fields, interacting with a thermally excited beam of phaseonium atoms.
We highlight the role played by the characteristic coherence phase of phaseonium atoms in determining the steady states of the cavity fields as well as that of the ancillas.
These results provide useful insights towards the use of different types of ancillas for thermodynamic cycles in cavity QED scenarios.
arXiv Detail & Related papers (2023-12-07T18:21:22Z) - Quantum emulation of the transient dynamics in the multistate
Landau-Zener model [50.591267188664666]
We study the transient dynamics in the multistate Landau-Zener model as a function of the Landau-Zener velocity.
Our experiments pave the way for more complex simulations with qubits coupled to an engineered bosonic mode spectrum.
arXiv Detail & Related papers (2022-11-26T15:04:11Z) - Evolution of a Non-Hermitian Quantum Single-Molecule Junction at
Constant Temperature [62.997667081978825]
We present a theory for describing non-Hermitian quantum systems embedded in constant-temperature environments.
We find that the combined action of probability losses and thermal fluctuations assists quantum transport through the molecular junction.
arXiv Detail & Related papers (2021-01-21T14:33:34Z) - Circuit Quantum Electrodynamics [62.997667081978825]
Quantum mechanical effects at the macroscopic level were first explored in Josephson junction-based superconducting circuits in the 1980s.
In the last twenty years, the emergence of quantum information science has intensified research toward using these circuits as qubits in quantum information processors.
The field of circuit quantum electrodynamics (QED) has now become an independent and thriving field of research in its own right.
arXiv Detail & Related papers (2020-05-26T12:47:38Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.