Optimally controlled non-adiabatic quantum state transmission in the presence of quantum noise

• URL: http://arxiv.org/abs/2302.08914v1
• Date: Fri, 17 Feb 2023 14:37:56 GMT
• Title: Optimally controlled non-adiabatic quantum state transmission in the presence of quantum noise
• Authors: Xiang-Han Liang, Lian-Ao Wu, Zhao-Ming Wang
• Abstract summary: We study the optimally controlled non-adiabatic QST in the presence of quantum noise. We find that the optimal pulse sequence can dramatically enhance the transmission fidelity of such an open system.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Pulse controlled non-adiabatic quantum state transmission (QST) was proposed many years ago. However, in practice environmental noise inevitably damages communication quality in the proposal. In this paper, we study the optimally controlled non-adiabatic QST in the presence of quantum noise. By using the Adam algorithm, we find that the optimal pulse sequence can dramatically enhance the transmission fidelity of such an open system. In comparison with the idealized pulse sequence in a closed system, it is interesting to note that the improvement of the fidelity obtained by the Adam algorithm can even be better for a bath strongly coupled to the system. Furthermore, we find that the Adam algorithm remains powerful for different number of sites and different types of Lindblad operators, showing its universality in performing optimal control of quantum information processing tasks.

Related papers

• Optimal Quantum Purity Amplification [2.05170973574812]
  Quantum purity amplification (QPA) offers a novel approach to counteract the pervasive noise that degrades quantum states. We present the optimal QPA protocol for general quantum systems against global depolarizing noise. Our findings suggest that QPA could improve the performance of quantum information processing tasks.
  arXiv  Detail & Related papers  (2024-09-26T17:46:00Z)
• Bias-field digitized counterdiabatic quantum optimization [39.58317527488534]
  We call this protocol bias-field digitizeddiabatic quantum optimization (BF-DCQO) Our purely quantum approach eliminates the dependency on classical variational quantum algorithms. It achieves scaling improvements in ground state success probabilities, increasing by up to two orders of magnitude.
  arXiv  Detail & Related papers  (2024-05-22T18:11:42Z)
• Optimal control in large open quantum systems: the case of transmon readout and reset [44.99833362998488]
  We present a framework that combines the adjoint state method together with reverse-time back-propagation to solve prohibitively large open-system quantum control problems. We apply this framework to optimize two inherently dissipative operations in superconducting qubits. Our results show that, given a fixed set of system parameters, shaping the control pulses can yield 2x improvements in the fidelity and duration for both of these operations.
  arXiv  Detail & Related papers  (2024-03-21T18:12:51Z)
• Quantum control by the environment: Turing uncomputability, Optimization over Stiefel manifolds, Reachable sets, and Incoherent GRAPE [56.47577824219207]
  In many practical situations, the controlled quantum systems are open, interacting with the environment. In this note, we briefly review some results on control of open quantum systems using environment as a resource.
  arXiv  Detail & Related papers  (2024-03-20T10:09:13Z)
• Robust Control of Single-Qubit Gates at the Quantum Speed Limit [0.0]
  We investigate the underlying robust time-optimal control problem so as to make the best balance. Based on the Taylor expansion of the system's unitary propagator, we formulate the design problem as the optimal control of an augmented finite-dimensional system. Numerical simulations for single-qubit systems show that the obtained time-optimal control pulses can effectively suppress gate errors.
  arXiv  Detail & Related papers  (2023-09-11T10:10:58Z)
• Hamiltonian Switching Control of Noisy Bipartite Qubit Systems [7.094462708097975]
  We develop a Hamiltonian switching ansatz for bipartite control inspired by the Quantum Approximate Optimization Algorithm (QAOA) We demonstrate effective suppression of both coherent and dissipative noise, with numerical studies achieving target gate implementations with fidelities over 0.9999 (four nines) We analyze how the control depth, total evolution time, number of environmental TLS, and choice of optimization method affect the fidelity achieved by the optimal protocols.
  arXiv  Detail & Related papers  (2023-04-11T20:12:57Z)
• Optimal quantum control via genetic algorithms for quantum state engineering in driven-resonator mediated networks [68.8204255655161]
  We employ a machine learning-enabled approach to quantum state engineering based on evolutionary algorithms. We consider a network of qubits -- encoded in the states of artificial atoms with no direct coupling -- interacting via a common single-mode driven microwave resonator. We observe high quantum fidelities and resilience to noise, despite the algorithm being trained in the ideal noise-free setting.
  arXiv  Detail & Related papers  (2022-06-29T14:34:00Z)
• Methods and Results for Quantum Optimal Pulse Control on Superconducting Qubit Systems [0.0]
  In transmon qubit systems, the quantum gate fidelity can be improved by applying control pulses that can minimize the effects of the environmental noise. We employ physics-guided quantum optimal control strategies to design optimal pulses driving quantum gates on superconducting qubit systems. We show that the optimized pulses improve the fidelity of the quantum gates, in particular the single-qubit gates.
  arXiv  Detail & Related papers  (2022-02-07T15:03:41Z)
• Towards fully-fledged quantum and classical communication over deployed fiber with up-conversion module [47.187609203210705]
  We propose and demonstrate a new method, based on up-conversion assisted receiver, for co-propagating classical light and QKD signals. Our proposal exhibits higher tolerance for noise in comparison to the standard receiver, thus enabling the distribution of secret keys in the condition of 4 dB-higher classical power.
  arXiv  Detail & Related papers  (2021-06-09T13:52:27Z)
• Efficient and robust certification of genuine multipartite entanglement in noisy quantum error correction circuits [58.720142291102135]
  We introduce a conditional witnessing technique to certify genuine multipartite entanglement (GME) We prove that the detection of entanglement in a linear number of bipartitions by a number of measurements scales linearly, suffices to certify GME. We apply our method to the noisy readout of stabilizer operators of the distance-three topological color code and its flag-based fault-tolerant version.
  arXiv  Detail & Related papers  (2020-10-06T18:00:07Z)
• Information Theoretical Limits for Quantum Optimal Control Solutions: Error Scaling of Noisy Channels [4.724825031148412]
  We provide analytical bounds (information-time bounds) to characterize our capability to control the system when subject to arbitrary sources of noise. We numerically test the scaling of the control accuracy as a function of the noise parameters, by means of the dressed chopped random basis (dCRAB) algorithm for quantum optimal control.
  arXiv  Detail & Related papers  (2020-06-29T15:22:09Z)

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.