Related papers: Stabilizer Testing and Magic Entropy

Related papers

Quantum Magic in Discrete-Time Quantum Walk [0.0]
We investigate the generation and evolution of quantum magic in discrete-time quantum walks (DTQWs)<n>Our results reveal that DTQWs can dynamically generate significant magic, with the amount and structure strongly dependent on the initial state of the coin.<n>In the case of a single walker, the relationship between magic and entanglement is found to be nontrivial and complementary at long times.
arXiv Detail & Related papers (2025-06-21T18:30:24Z)
Quantum Cryptography Using Momentum and Position Variables in a Simple Optical Arrangement [49.1574468325115]
We explore an experimental implementation of quantum key distribution (QKD) using position and momentum quantum states.<n>By employing a setup that includes a laser, a slit, and lenses, we demonstrate a variation of the BB84 protocol.
arXiv Detail & Related papers (2025-05-07T09:11:37Z)
A mathematical model for a universal digital quantum computer with an application to the Grover-Rudolph algorithm [0.0]
We develop a novel framework for universal digital quantum computation using algebraic probability theory.<n>We define quantum circuits as finite sequences of elementary quantum gates.<n>We design a quantum circuit that approximates a given probability density function.
arXiv Detail & Related papers (2025-03-17T17:18:45Z)
Quantum Homogenization as a Quantum Steady State Protocol on NISQ Hardware [42.52549987351643]
Quantum homogenization is a reservoir-based quantum state approximation protocol.<n>We extend the standard quantum homogenization protocol to the dynamically-equivalent ($mathttSWAP$)$alpha$ formulation.<n>We show that our proposed protocol yields a completely positive, trace preserving (CPTP) map under which the code subspace is correctable.
arXiv Detail & Related papers (2024-12-19T05:50:54Z)
Quantum decoherence from complex saddle points [0.0]
Quantum decoherence is the effect that bridges quantum physics to classical physics.<n>We present some first-principle calculations in the Caldeira-Leggett model.<n>We also discuss how to extend our approach to general models by Monte Carlo calculations.
arXiv Detail & Related papers (2024-08-29T15:35:25Z)
Monte Carlo Graph Search for Quantum Circuit Optimization [26.114550071165628]
This work proposes a quantum architecture search algorithm based on a Monte Carlo graph search and measures of importance sampling. It is applicable to the optimization of gate order, both for discrete gates, as well as gates containing continuous variables.
arXiv Detail & Related papers (2023-07-14T14:01:25Z)
A vertical gate-defined double quantum dot in a strained germanium double quantum well [48.7576911714538]
Gate-defined quantum dots in silicon-germanium heterostructures have become a compelling platform for quantum computation and simulation. We demonstrate the operation of a gate-defined vertical double quantum dot in a strained germanium double quantum well. We discuss challenges and opportunities and outline potential applications in quantum computing and quantum simulation.
arXiv Detail & Related papers (2023-05-23T13:42:36Z)
Quantum Computation of Phase Transition in Interacting Scalar Quantum Field Theory [0.0]
It has been demonstrated that the critical point of the phase transition in scalar quantum field theory can be approximated via a Gaussian Effective Potential (GEP) We perform quantum computations with various lattice sizes and obtain evidence of a transition from a symmetric to a symmetry-broken phase. We implement the ten-site case on IBM quantum hardware using the Variational Quantum Eigensolver (VQE) algorithm to minimize the GEP.
arXiv Detail & Related papers (2023-03-04T14:11:37Z)
Quantum process tomography of continuous-variable gates using coherent states [49.299443295581064]
We demonstrate the use of coherent-state quantum process tomography (csQPT) for a bosonic-mode superconducting circuit. We show results for this method by characterizing a logical quantum gate constructed using displacement and SNAP operations on an encoded qubit.
arXiv Detail & Related papers (2023-03-02T18:08:08Z)
Quantum Machine Learning: from physics to software engineering [58.720142291102135]
We show how classical machine learning approach can help improve the facilities of quantum computers. We discuss how quantum algorithms and quantum computers may be useful for solving classical machine learning tasks.
arXiv Detail & Related papers (2023-01-04T23:37:45Z)
Complexity of quantum circuits via sensitivity, magic, and coherence [5.630280136865099]
We study the complexity of quantum circuits using the notions of sensitivity, average sensitivity (also called influence), magic, and coherence. Our results are pivotal for understanding the role of sensitivity, magic, and coherence in quantum computation.
arXiv Detail & Related papers (2022-04-26T03:15:09Z)
Scalable measures of magic resource for quantum computers [0.0]
We introduce efficient measures of magic resource for pure quantum states with a sampling cost independent of the number of qubits. We show the transition of classically simulable stabilizer states into intractable quantum states on the IonQ quantum computer.
arXiv Detail & Related papers (2022-04-21T12:50:47Z)
Quantifying information scrambling via Classical Shadow Tomography on Programmable Quantum Simulators [0.0]
We develop techniques to probe the dynamics of quantum information, and implement them experimentally on an IBM superconducting quantum processor. We identify two unambiguous signatures of quantum information scrambling, neither of which can be mimicked by dissipative processes. We measure both signatures, and support our results with numerical simulations of the quantum system.
arXiv Detail & Related papers (2022-02-10T16:36:52Z)
Interactive Protocols for Classically-Verifiable Quantum Advantage [46.093185827838035]
"Interactions" between a prover and a verifier can bridge the gap between verifiability and implementation. We demonstrate the first implementation of an interactive quantum advantage protocol, using an ion trap quantum computer.
arXiv Detail & Related papers (2021-12-09T19:00:00Z)
Towards understanding the power of quantum kernels in the NISQ era [79.8341515283403]
We show that the advantage of quantum kernels is vanished for large size datasets, few number of measurements, and large system noise. Our work provides theoretical guidance of exploring advanced quantum kernels to attain quantum advantages on NISQ devices.
arXiv Detail & Related papers (2021-03-31T02:41:36Z)
Imaginary Time Propagation on a Quantum Chip [50.591267188664666]
Evolution in imaginary time is a prominent technique for finding the ground state of quantum many-body systems. We propose an algorithm to implement imaginary time propagation on a quantum computer.
arXiv Detail & Related papers (2021-02-24T12:48:00Z)
Continuous Variable Quantum Advantages and Applications in Quantum Optics [0.0]
This thesis focuses on three main questions in the continuous variable and optical settings. Where does a quantum advantage, that is, the ability of quantum machines to outperform classical machines, come from? What advantages can be gained in practice from the use of quantum information?
arXiv Detail & Related papers (2021-02-10T02:43:27Z)
Information Scrambling in Computationally Complex Quantum Circuits [56.22772134614514]
We experimentally investigate the dynamics of quantum scrambling on a 53-qubit quantum processor. We show that while operator spreading is captured by an efficient classical model, operator entanglement requires exponentially scaled computational resources to simulate.
arXiv Detail & Related papers (2021-01-21T22:18:49Z)
Quantum walk processes in quantum devices [55.41644538483948]
We study how to represent quantum walk on a graph as a quantum circuit. Our approach paves way for the efficient implementation of quantum walks algorithms on quantum computers.
arXiv Detail & Related papers (2020-12-28T18:04:16Z)
Pure State Tomography with Fourier Transformation [3.469001874498102]
Two adaptive protocols are proposed, with their respective quantum circuits. Experiments on the IBM 5-qubit quantum computer, as well as numerical investigations, demonstrate the feasibility of the proposed protocols.
arXiv Detail & Related papers (2020-08-20T17:13:09Z)
QUANTIFY: A framework for resource analysis and design verification of quantum circuits [69.43216268165402]
QUANTIFY is an open-source framework for the quantitative analysis of quantum circuits. It is based on Google Cirq and is developed with Clifford+T circuits in mind. For benchmarking purposes QUANTIFY includes quantum memory and quantum arithmetic circuits.
arXiv Detail & Related papers (2020-07-21T15:36:25Z)
Probing the Universality of Topological Defect Formation in a Quantum Annealer: Kibble-Zurek Mechanism and Beyond [46.39654665163597]
We report on experimental tests of topological defect formation via the one-dimensional transverse-field Ising model. We find that the quantum simulator results can indeed be explained by the KZM for open-system quantum dynamics with phase-flip errors. This implies that the theoretical predictions of the generalized KZM theory, which assumes isolation from the environment, applies beyond its original scope to an open system.
arXiv Detail & Related papers (2020-01-31T02:55:35Z)
Jumptime unraveling of Markovian open quantum systems [68.8204255655161]
We introduce jumptime unraveling as a distinct description of open quantum systems. quantum jump trajectories emerge, physically, from continuous quantum measurements. We demonstrate that quantum trajectories can also be ensemble-averaged at specific jump counts.
arXiv Detail & Related papers (2020-01-24T09:35:32Z)

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