High-fidelity State Transfer Between Leaky Quantum Memories
- URL: http://arxiv.org/abs/2005.13062v1
- Date: Tue, 26 May 2020 21:53:03 GMT
- Title: High-fidelity State Transfer Between Leaky Quantum Memories
- Authors: Daniel Soh, Eric Chatterjee, Matt Eichenfield
- Abstract summary: We derive the optimal analytical quantum-state-transfer control solutions for two disparate quantum memory blocks.
Using the SLH formalism description of quantum network theory, we calculate the full quantum dynamics of system populations.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We derive the optimal analytical quantum-state-transfer control solutions for
two disparate quantum memory blocks. Employing the SLH formalism description of
quantum network theory, we calculate the full quantum dynamics of system
populations, which lead to the optimal solution for the highest quantum
fidelity attainable. We show that, for the example where the mechanical modes
of two optomechanical oscillators act as the quantum memory blocks, their
optical modes and a waveguide channel connecting them can be used to achieve a
quantum state transfer fidelity of 96% with realistic parameters using our
derived optimal control solution. The effects of the intrinsic losses and the
asymmetries in the physical memory parameters are discussed quantitatively.
Related papers
- 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) - Direct Characteristic-Function Tomography of the Quantum States of
Quantum Fields [5.145146101802871]
We propose a strategy for implementing a direct readout of the symmetric characteristic function of the quantum states of quantum fields.
This strategy may serve as an essential in understanding and optimizing the control of quantum fields for relativistic quantum information applications.
arXiv Detail & Related papers (2023-10-20T14:15:14Z) - An Amplitude-Based Implementation of the Unit Step Function on a Quantum
Computer [0.0]
We introduce an amplitude-based implementation for approximating non-linearity in the form of the unit step function on a quantum computer.
We describe two distinct circuit types which receive their input either directly from a classical computer, or as a quantum state when embedded in a more advanced quantum algorithm.
arXiv Detail & Related papers (2022-06-07T07:14:12Z) - Approaching optimal entangling collective measurements on quantum
computing platforms [0.3665899982351484]
We show theoretically optimal single- and two-copy collective measurements for simultaneously estimating two non-commuting qubit rotations.
This allows us to implement quantum-enhanced sensing, for which the metrological gain persists for high levels of decoherence.
arXiv Detail & Related papers (2022-05-30T18:07:27Z) - High Fidelity Quantum State Transfer by Pontryagin Maximum Principle [68.8204255655161]
We address the problem of maximizing the fidelity in a quantum state transformation process satisfying the Liouville-von Neumann equation.
By introducing fidelity as the performance index, we aim at maximizing the similarity of the final state density operator with the one of the desired target state.
arXiv Detail & Related papers (2022-03-07T13:27:26Z) - Entanglement catalysis for quantum states and noisy channels [41.94295877935867]
We investigate properties of entanglement and its role for quantum communication.
For transformations between bipartite pure states, we prove the existence of a universal catalyst.
We further develop methods to estimate the number of singlets which can be established via a noisy quantum channel.
arXiv Detail & Related papers (2022-02-10T18:36:25Z) - Numerical Gate Synthesis for Quantum Heuristics on Bosonic Quantum
Processors [1.195496689595016]
We study the framework in the context of qudits which are controllable electromagnetic modes of a superconducting cavity system.
We showcase control of single-qudit operations up to eight states, and two-qutrit operations, mapped respectively onto a single mode and two modes of the resonator.
arXiv Detail & Related papers (2022-01-19T18:55:13Z) - Efficient criteria of quantumness for a large system of qubits [58.720142291102135]
We discuss the dimensionless combinations of basic parameters of large, partially quantum coherent systems.
Based on analytical and numerical calculations, we suggest one such number for a system of qubits undergoing adiabatic evolution.
arXiv Detail & Related papers (2021-08-30T23:50:05Z) - Entanglement transfer, accumulation and retrieval via quantum-walk-based
qubit-qudit dynamics [50.591267188664666]
Generation and control of quantum correlations in high-dimensional systems is a major challenge in the present landscape of quantum technologies.
We propose a protocol that is able to attain entangled states of $d$-dimensional systems through a quantum-walk-based it transfer & accumulate mechanism.
In particular, we illustrate a possible photonic implementation where the information is encoded in the orbital angular momentum and polarization degrees of freedom of single photons.
arXiv Detail & Related papers (2020-10-14T14:33:34Z) - Solving Quantum Master Equations with Deep Quantum Neural Networks [0.0]
We use deep quantum feedforward neural networks capable of universal quantum computation to represent the mixed states for open quantum many-body systems.
Owning to the special structure of the quantum networks, this approach enjoys a number of notable features, including the absence of barren plateaus.
arXiv Detail & Related papers (2020-08-12T18:00:08Z)
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.