Related papers: Shortcuts to Adiabaticity for Fast Qubit Readout in Circuit Quantum Electrodynamics

Shortcuts to Adiabaticity for Fast Qubit Readout in Circuit Quantum Electrodynamics

URL: http://arxiv.org/abs/2201.06007v2
Date: Thu, 8 Sep 2022 12:17:49 GMT
Title: Shortcuts to Adiabaticity for Fast Qubit Readout in Circuit Quantum Electrodynamics
Authors: F. A. C\'ardenas-L\'opez, Xi Chen
Abstract summary: We show how to engineer the longitudinal coupling to accelerate the measurement of a qubit longitudinally coupled to a cavity. By comparison, we demonstrate that our protocols outperform the usual periodic modulations on the pointer state separation and SNR.
Score: 5.122487534787007
License: http://creativecommons.org/publicdomain/zero/1.0/
Abstract: We propose how to engineer the longitudinal coupling to accelerate the measurement of a qubit longitudinally coupled to a cavity, motivated by the concept of shortcuts to adiabaticity. Different modulations are inversely designed from two methods of inverse engineering and counter-diabatic driving, for achieving larger values of the signal-to-noise ratio (SNR) at nanosecond scale. By comparison, we demonstrate that our protocols outperform the usual periodic modulations on the pointer state separation and SNR. Finally, we show a possible implementation considering state-of-the-art circuit quantum electrodynamics architecture, estimating the minimal time allowed for the measurement process.

Related papers

Shortcuts to adiabaticity designed via time-rescaling follow the same transitionless route [41.94295877935867]
Time-rescaling (TR) has been recently proposed as a method to engineer fast processes. We show that the obtained fast dynamics are transitionless, similar to the ones designed via the famous counterdiabatic (CD) approach.
arXiv Detail & Related papers (2024-06-11T16:34:36Z)
Fast entangling quantum gates with almost-resonant modulated driving [7.663114782454964]
off-resonant modulated driving (ORMD) with a special category of synthetic analytical pulses has improved the experimental performance of two- and multi-qubit gates. We design and analyze the entangling quantum gates via the almost-resonant driving (ARMD) method.
arXiv Detail & Related papers (2024-02-09T16:16:58Z)
Enhancing Dispersive Readout of Superconducting Qubits Through Dynamic Control of the Dispersive Shift: Experiment and Theory [47.00474212574662]
A superconducting qubit is coupled to a large-bandwidth readout resonator. We show a beyond-state-of-the-art two-state-readout error of only 0.25,%$ in 100 ns integration time. The presented results are expected to further boost the performance of new and existing algorithms and protocols.
arXiv Detail & Related papers (2023-07-15T10:30:10Z)
Pulse-controlled qubit in semiconductor double quantum dots [57.916342809977785]
We present a numerically-optimized multipulse framework for the quantum control of a single-electron charge qubit. A novel control scheme manipulates the qubit adiabatically, while also retaining high speed and ability to perform a general single-qubit rotation.
arXiv Detail & Related papers (2023-03-08T19:00:02Z)
Shortcuts to adiabaticity in superconducting circuits for fast multi-partite state generation [3.8580539160777625]
We propose the reverse-engineering approach to design the longitudinal coupling between a set of qubits coupled to several field modes. We show that the enhancing generation time is at the nanosecond scale that does not scale with the number of system components.
arXiv Detail & Related papers (2023-02-15T16:12:19Z)
Enhancing the Coherence of Superconducting Quantum Bits with Electric Fields [62.997667081978825]
We show that qubit coherence can be improved by tuning defects away from the qubit resonance using an applied DC-electric field. We also discuss how local gate electrodes can be implemented in superconducting quantum processors to enable simultaneous in-situ coherence optimization of individual qubits.
arXiv Detail & Related papers (2022-08-02T16:18:30Z)
Pulse-level Scheduling of Quantum Circuits for Neutral-Atom Devices [0.0]
We show how a pulse-level implementation of the multi-qubit gates in neutral-atom device architectures allows for the simultaneous execution of single- and multi-qubit gates. We present an algorithm to schedule the execution of a quantum circuit as a pulse sequence on a neutral-atom device with a single channel for single- and multi-qubit gate execution.
arXiv Detail & Related papers (2022-06-10T14:37:09Z)
Extensible circuit-QED architecture via amplitude- and frequency-variable microwaves [52.77024349608834]
We introduce a circuit-QED architecture combining fixed-frequency qubits and microwave-driven couplers. Drive parameters appear as tunable knobs enabling selective two-qubit coupling and coherent-error suppression.
arXiv Detail & Related papers (2022-04-17T22:49:56Z)
Fast and differentiable simulation of driven quantum systems [58.720142291102135]
We introduce a semi-analytic method based on the Dyson expansion that allows us to time-evolve driven quantum systems much faster than standard numerical methods. We show results of the optimization of a two-qubit gate using transmon qubits in the circuit QED architecture.
arXiv Detail & Related papers (2020-12-16T21:43:38Z)
Hardware-Encoding Grid States in a Non-Reciprocal Superconducting Circuit [62.997667081978825]
We present a circuit design composed of a non-reciprocal device and Josephson junctions whose ground space is doubly degenerate and the ground states are approximate codewords of the Gottesman-Kitaev-Preskill (GKP) code. We find that the circuit is naturally protected against the common noise channels in superconducting circuits, such as charge and flux noise, implying that it can be used for passive quantum error correction.
arXiv Detail & Related papers (2020-02-18T16:45:09Z)

This list is automatically generated from the titles and abstracts of the papers in this site.