Quantum Hilbert Transform
- URL: http://arxiv.org/abs/2505.23581v2
- Date: Fri, 30 May 2025 01:47:33 GMT
- Title: Quantum Hilbert Transform
- Authors: Nitin Jha, Abhishek Parakh,
- Abstract summary: We introduce a formulation for the quantum Hilbert transform (QHT)<n>By bridging classical phase-shift techniques with quantum operations, QHT opens new pathways in quantum signal processing, communications, sensing, and secure information hiding.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: The Hilbert transform has been one of the foundational transforms in signal processing, finding it's way into multiple disciplines from cryptography to biomedical sciences. However, there does not exist any quantum analogue for the Hilbert transform. In this work, we introduce a formulation for the quantum Hilbert transform (QHT)and apply it to a quantum steganography protocol. By bridging classical phase-shift techniques with quantum operations, QHT opens new pathways in quantum signal processing, communications, sensing, and secure information hiding.
Related papers
- Efficient Quantum Circuits for the Hilbert Transform [0.0]
This letter presents a novel construction for a quantum Hilbert transform in polylogarithmic size and logarithmic depth for a signal of length $N$.<n>We generalize this algorithm to create any $d$-dimensional Hilbert transform in depth $O(dlog N)$.<n> Simulations demonstrate effectiveness for tasks such as power systems control and image processing, with exact agreement with classical results.
arXiv Detail & Related papers (2026-01-15T22:02:32Z) - 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) - Quantum Transduction: Enabling Quantum Networking [13.14497909485588]
In quantum networks, while processing and storing quantum information, must also communicate through quantum links.<n>One of the most promising hardware platforms at quantum nodes for scalable and fast quantum computing is the superconducting technology.<n>Quantum interface, known as quantum transducer, able to convert one type of qubit to another is required.
arXiv Detail & Related papers (2025-05-04T10:27:47Z) - Quantum communication scheme to teleport arbitrary quantum state via discrete time quantum walks [0.0]
We propose a quantum communication protocol via 2-step discrete time quantum walks with two coins on a graph of 10 vertices containing both cycles and paths.<n>We calculate the total final quantum state of the system as well as the recovery operators to rescue the initial quantum state back at the receiver's location.
arXiv Detail & Related papers (2025-01-20T23:18:00Z) - Fundamental limitations on the recoverability of quantum processes [0.6990493129893111]
We determine fundamental limitations on how well the physical transformation on quantum channels can be undone or reversed.
We refine (strengthen) the quantum data processing inequality for quantum channels under the action of quantum superchannels.
We also provide a refined inequality for the entropy change of quantum channels under the action of an arbitrary quantum superchannel.
arXiv Detail & Related papers (2024-03-19T17:50:24Z) - 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 Phase Processing and its Applications in Estimating Phase and
Entropies [10.8525801756287]
"quantum phase processing" can directly apply arbitrary trigonometric transformations to eigenphases of a unitary operator.
Quantum phase processing can extract the eigen-information of quantum systems by simply measuring the ancilla qubit.
We propose a new quantum phase estimation algorithm without quantum Fourier transform, which requires the fewest ancilla qubits and matches the best performance so far.
arXiv Detail & Related papers (2022-09-28T17:41:19Z) - Circuit Symmetry Verification Mitigates Quantum-Domain Impairments [69.33243249411113]
We propose circuit-oriented symmetry verification that are capable of verifying the commutativity of quantum circuits without the knowledge of the quantum state.
In particular, we propose the Fourier-temporal stabilizer (STS) technique, which generalizes the conventional quantum-domain formalism to circuit-oriented stabilizers.
arXiv Detail & Related papers (2021-12-27T21:15:35Z) - Variational quantum process tomography [12.843681115589122]
We put forward a quantum machine learning algorithm which encodes the unknown unitary quantum process into a relatively shallow depth parametric quantum circuit.
Results show that those quantum processes could be reconstructed with high fidelity, while the number of input states required are at least $2$ orders of magnitude less than required by the standard quantum process tomography.
arXiv Detail & Related papers (2021-08-05T03:36:26Z) - Trainable Discrete Feature Embeddings for Variational Quantum Classifier [4.40450723619303]
We show how to map discrete features with fewer quantum bits using Quantum Random Access Coding (QRAC)
We propose a new method to embed discrete features with trainable quantum circuits by combining QRAC and a recently proposed strategy for training quantum feature map called quantum metric learning.
arXiv Detail & Related papers (2021-06-17T12:02:01Z) - 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) - 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) - Quantum information spreading in a disordered quantum walk [50.591267188664666]
We design a quantum probing protocol using Quantum Walks to investigate the Quantum Information spreading pattern.
We focus on the coherent static and dynamic disorder to investigate anomalous and classical transport.
Our results show that a Quantum Walk can be considered as a readout device of information about defects and perturbations occurring in complex networks.
arXiv Detail & Related papers (2020-10-20T20:03:19Z)
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.