TransWikia.com
  1. All Categories
  2. Quantum Computing

Quantum Computing : Recent Questions and Answers (Page 9)

Find answers to your questions about Quantum Computing or help others by answering their Quantum Computing questions.

How well defined is $log(P)$ for $P$ projection?

Whenever we calculate entropy we make use, for example, $log(P)$ for $P$ a projection defined for some arbitrary finite dimensional Hilbert space. But for projection operators this...

Asked on 08/20/2021 by R.W

1 answer

Where to publish quantum algorithm related paper

I am an undergraduate student and I wrote a paper for my research program on quantum information. To be more specific, it is about using a novel quantum algorithm to...

Asked on 08/20/2021 by Zzy1130

2 answer

Randomness using simple parallel Hadamard circuit

I've recently tried to build a Random generator using 5 hadamard gates (shown as U2 below) measured to 5 classical bits in parallel as shown in the circuit image....

Asked on 08/20/2021 by Konrad

1 answer

Can a Kraus representation act as the identity on any operator?

In the textbook “Quantum Computation and Quantum Information” by Nielsen and Chuang, it is stated that there exists a set of unitaries $U_i$ and a probability distribution $p_i$...

Asked on 08/20/2021

4 answer

Am I doing anything wrong when trying to calculate the expectation value in Qiskit on the real hardware?

I am trying to use the method of calculating the expectation values of Pauli operators in Qiskit which I found here. However, the results obtained via IBMQ sampling differ...

Asked on 08/20/2021 by stinglikeabeer

1 answer

Representing a von Neumann measurement as $[mathcal{I} otimes P_i] U(rho_s otimes rho_a)U^{-1} [mathcal{I} otimes P_i]$, how do we choose $U$?

Given the state of a system as $rho_s$ and that of the ancilla (pointer) as $rho_a$, the Von-Neumann measurement involves entangling a system with ancilla and then performing...

Asked on 08/20/2021

0 answer

Relation between Wigner quasi-probabability distribution and statistical second-moment

Is there any relation between the Wigner quasi-probability distribution function $W$ and the statistical second-moment (also known as covariance matrix) of a density matrix of a continuous variable state,...

Asked on 08/20/2021 by Kianoosh.kargar

1 answer

What does the adjoint of a channel represent physically?

Given a quantum channel (CPTP map) $Phi:mathcal Xtomathcal Y$, its adjoint is the CPTP map $Phi^dagger:mathcal Ytomathcal X$ such that, for all $Xinmathcal X$ and $Yinmathcal...

Asked on 08/20/2021

3 answer

Is it possible to detect the phase $pi$ or 0 for the single qubit circuit X H P?

I found an answer that shows how to detect the phase in cases like $0$, $pi/8$, $pi/2$, $pi/4$ or $pi$ for circuit to prepare...

Asked on 08/20/2021 by Psanfi

1 answer

Equivalence checking of quantum circuits up to error

Suppose you are given two circuit descriptions $A$ and $B$ where by a circuit description I mean a sequence of gates (in the order they are applied) and...

Asked on 08/20/2021 by Marsl

0 answer

Ask a Question

Get help from others!

© 2024 TransWikia.com. All rights reserved. Sites we Love: PCI Database, UKBizDB, Menu Kuliner, Sharing RPP