Results 61 to 70 of about 5,442 (189)

Extension of the Alberti-Uhlmann criterion beyond qubit dichotomies [PDF]

Quantum, 2020
The Alberti-Uhlmann criterion states that any given qubit dichotomy can be transformed into any other given qubit dichotomy by a quantum channel if and only if the testing region of the former dichotomy includes the testing region of the latter dichotomy.
Michele Dall'Arno, Francesco Buscemi, Valerio Scarani   +2 more
doaj   +1 more source

Generalized Euler Angle Paramterization for SU(N)

, 2002
In a previous paper (math-ph/0202002) an Euler angle parameterization for SU(4) was given. Here we present the derivation of a generalized Euler angle parameterization for SU(N).
Artin M, Biedenharn L C, Boya Luis J, Breinig M, Byrd M, Byrd M, Byrd M, Corben H C, E C G Sudarshan, Georgi H, Greiner W, Hermann R, Herstein I N, Marinov M S, Marinov M S, Murnaghan F D, Preskill J, Sattinger D H, Scott W R, Tilma T, Todd Tilma, Vilenkin N Ja   +21 more
core   +3 more sources

Single photonic qutrit in a collective Rydberg polariton

Physical Review Research
Qutrit with highly efficient algorithms and security is imperative in quantum information processing. Here, we demonstrate for the first time the coherent creation, control, and readout of a single photonic qutrit in a cold Rydberg ensemble.
Yuechun Jiao, Oliver D. W. Hughes, Max Z. Festenstein, Zhengyang Bai, Jianming Zhao, Weibin Li, Kevin J. Weatherill, C. Stuart Adams   +7 more
doaj   +1 more source

SIC-POVMs and Compatibility among Quantum States

Mathematics, 2016
An unexpected connection exists between compatibility criteria for quantum states and Symmetric Informationally Complete quantum measurements (SIC-POVMs). Beginning with Caves, Fuchs and Schack’s "Conditions for compatibility of quantum state assignments"
Blake C. Stacey
doaj   +1 more source

One-Dimensional Lazy Quantum Walk in Ternary System

IEEE Transactions on Quantum Engineering, 2021
Quantum walks play an important role for developing quantum algorithms and quantum simulations. Here, we introduce a first of its kind one-dimensional lazy quantum walk in the ternary quantum domain and show its equivalence for circuit realization in ...
Amit Saha, Sudhindu Bikash Mandal, Debasri Saha, Amlan Chakrabarti   +3 more
doaj   +1 more source

Dynamics of entanglement for a two-parameter class of states in a qubit-qutrit system

, 2012
We investigate the dynamics of entanglement for a two-parameter class of states in a hybrid qubit-qutrit system under the influence of various dissipative channels.
Deng, Fu-Guo, Hua, Ming, Li, Tao, Ren, Bao-Cang, Wei, Hai-Rui   +4 more
core   +1 more source

Qubit representation of qudit states: correlations and state reconstruction

, 2019
A method to establish a qubit decomposition of a general qudit state is presented. This new representation allows a geometrical depiction of any qudit state in the Bloch sphere.
Castaños, Octavio, López-Saldívar, Julio A., Man'ko, Margarita A., Man'ko, Vladimir I.   +3 more
core   +1 more source

Violation of Qudit Mermin's Inequality and Its Application to Quantum Computing

Advanced Quantum Technologies, Volume 9, Issue 4, April 2026.
High‐dimensional multipartite nonlocality certifies genuinely d$d$‐level many‐body correlations and enables measurement‐based quantum computation (MBQC) with measurement alphabets larger than those achievable with binary qubit settings. This work demonstrates this nonlocality by violating a three‐level Mermin inequality with a frequency–time‐entangled ...
Jinwon Yoo, Stefania Sciara, Nicola Montaut, Agnes George, Roberto Morandotti   +4 more
wiley   +1 more source

Cat states in one- and two-mode Z_{3} Rabi models

Physical Review Research
We investigate one- and two-mode variants of the Z_{3}-symmetric quantum Rabi model, which describe the interaction of a qutrit with one or two bosonic modes and are directly relevant for circuit-QED and spin-qudit platforms.
Anatoliy I. Lotkov, Denis V. Kurlov, Valerii K. Kozin, Jelena Klinovaja, Daniel Loss   +4 more
doaj   +1 more source

Conversion of Arbitrary Three-Dimensional Polarization States to Regular States via Spin Cancellation

Photonics
The present work is motivated by the necessity of handling and controlling three-dimensional polarization states, whose appropriate preparation has increasing interest in areas like nanotechnologies, quantum computing and near-field phenomena.
José J. Gil
doaj   +1 more source