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Quantum-information
New post in Quantum-information
What does the rank of a two-qubit density matrix represent?
February 17th, 2022
quantum-entanglement
quantum-information
quantum-mechanics
Tensor product of Hadamard operators
January 13th, 2020
quantum-information
homework-and-exercises
Types of photon qubit encoding
June 26th, 2020
quantum-information
quantum-optics
Constructing a POVM to discriminate $m$ quantum states. What if they're linearly dependent?
May 6th, 2020
homework-and-exercises
hilbert-space
quantum-mechanics
quantum-information
How do you find the projection operator onto an eigenspace if you don't know the eigenvector?
August 3rd, 2020
hilbert-space
homework-and-exercises
quantum-mechanics
quantum-information
operators
Bra-ket notation, Bits, & Superposition
October 21st, 2020
quantum-computer
quantum-information
quantum-mechanics
superposition
Faster-than-light communication using Alcubierre warp drive metric around a single qubit?
January 23rd, 2020
faster-than-light
casimir-effect
general-relativity
quantum-information
What does it really mean for a state to be in a superposition?
June 18th, 2021
quantum-mechanics
quantum-information
superposition
Are they the same thing: Wigner distribution in quantum Boltzmann equation and Wigner function in quantum optics?
September 19th, 2020
wigner-transform
quantum-mechanics
solid-state-physics
quantum-information
greens-functions
Book recommendations for learning about open quantum systems
November 7th, 2020
quantum-information
resource-recommendations
open-quantum-systems
quantum-mechanics
What is meant by fermionic and bosonic "modes"?
November 11th, 2020
bosons
fermions
quantum-information
quantum-field-theory
grassmann-numbers
Why do we want to entangle qubits?
August 1st, 2022
quantum-mechanics
quantum-information
quantum-computer
quantum-entanglement
Deutsch-Jozsa Algorithm for Non-Balanced+Non-Constant Functions?
December 28th, 2020
quantum-computer
quantum-information
algorithms
Composition of squeeze operators?
April 11th, 2020
quantum-mechanics
second-quantization
bosons
quantum-information
What are the benefits of quantum information "teleportation"?
February 25th, 2020
quantum-mechanics
quantum-information
quantum-entanglement
quantum-teleportation
Derivation of $P$ representation of the thermal density operator
August 1st, 2022
density-operator
quantum-optics
thermal-radiation
quantum-information
coherent-states
Distinguishability in Quantum Ensembles
August 1st, 2022
quantum-mechanics
quantum-information
Information relationship to Special Relativity
September 17th, 2020
faster-than-light
phase-velocity
quantum-information
special-relativity
Smallest number of quantum gates to simulate other gates?
August 1st, 2022
quantum-information
quantum-computer
homework-and-exercises
Can every density operator be written as an outer product of two vectors?
March 22nd, 2022
quantum-mechanics
hilbert-space
density-operator
quantum-information
Why is quantum mechanics reversible?
August 1st, 2022
unitarity
reversibility
quantum-information
quantum-mechanics
What is discrete phase space?
August 1st, 2022
chaos-theory
wigner-transform
quantum-information
differential-geometry
quantum-mechanics
Definition of the "support" of the reduced density matrix
August 1st, 2022
operators
quantum-information
terminology
linear-algebra
density-operator
Schmidt decomposition - example
March 28th, 2020
quantum-mechanics
homework-and-exercises
quantum-information
What is the physical interpretation of the density matrix in a double continuous basis $|\alpha\rangle$, $|\beta\rangle$?
May 10th, 2021
quasiprobability-distributions
quantum-mechanics
quantum-information
quantum-optics
wigner-transform
What is the Wigner function of $|n\rangle\langle m|$?
March 12th, 2020
quantum-mechanics
quantum-information
quantum-optics
wigner-transform
What information does the Von Neumann entropy give for mixed states?
December 30th, 2020
quantum-information
density-operator
entanglement-entropy
quantum-mechanics
quantum-entanglement
Why is quantum teleportation important in cryptography?
August 1st, 2022
quantum-information
quantum-mechanics
quantum-teleportation
How to apply a Hadamard gate?
August 1st, 2022
quantum-mechanics
homework-and-exercises
quantum-information
quantum-computer
Quantum circuit for a $3$-qubit $|W \rangle$ state
July 9th, 2020
quantum-information
quantum-computer
quantum-entanglement
hilbert-space
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