swap_horiz GHZ state Alternatives

1

qubit

A qubit, the basic unit of quantum information, can exist in a superposition of states – simultaneously representing 0,...

Computing Information State Two Level

9.4 Excellent

2

CNOT gate

The Controlled-NOT (CNOT) gate is a fundamental two-qubit quantum logic gate that flips the target qubit's state based o...

Gate Two Qubit Clifford Entangling

9.4 Excellent

3

density matrix

A density matrix describes the state of a quantum system, even when that state is unknown or entangled, by representing...

Mixed Formalism State Open Systems

9.3 Excellent

4

Hadamard gate

The Hadamard gate is a fundamental single-qubit quantum operation that transforms a qubit's state from a definite |0⟩ or...

Gate Qubit Superposition Clifford

9.2 Excellent

5

gate-model quantum computing

Gate-model quantum computing manipulates qubits through sequences of logic gates—analogous to classical computer operati...

Computing Model Universal Circuit

9.2 Excellent

6

Grover's algorithm

Grover’s algorithm is a quantum search algorithm that can find a specific item within an unsorted database of N items in...

Search Algorithm Speedup Amplitude

9.2 Excellent

7

Bloch sphere

The Bloch sphere is a geometrical representation of a qubit's state, visualizing its superposition as a point on the sur...

Visualization State Qubit Two Level

9.1 Excellent

8

topological order

Topological order is a state of matter in quantum systems where electron behavior is governed by the global arrangement...

Matter Topology Phase Many Body

9.1 Excellent

9

quantum phase estimation

Quantum Phase Estimation is an algorithm that determines the eigenvalues of a unitary operator by leveraging superpositi...

Algorithm Computing Eigenvalue Subroutine

9.1 Excellent

10

Berry phase

A Berry phase is an extra phase factor acquired by a quantum system's wavefunction as it cycles through a closed loop in...

Geometric Adiabatic Phase Phenomenon

8.9 Great

11

coherent state

A coherent state is a specific quantum state of a harmonic oscillator exhibiting properties remarkably similar to classi...

Optics Oscillator State Semiclassical

8.7 Great

12

Wigner function

The Wigner function represents a quasi-probability distribution in phase space, offering a way to analyze quantum states...

Formalism Phase Space State Quasiprobability

8.6 Great

13

squeezed state

A squeezed state is a quantum mechanical state where the uncertainty in one observable, like position or momentum, is re...

Optics Noise State Continuous Variable

8.5 Great

14

interaction picture

The interaction picture in quantum mechanics reformulates time evolution by shifting the time dependence from operators...

Foundation Formalism Dynamics Perturbation

8.3 Great

15

cat state

Cat state, derived from Schrödinger's thought experiment, describes a quantum system existing in multiple contradictory...

Optics Oscillator State Superposition

8.3 Great

16

Fock state

A Fock state in quantum mechanics represents a specific, well-defined eigenstate of the number operator, signifying a fi...

Optics Photons State Number State

8.0 Great

17

Husimi Q function

The Husimi Q function, a quasiprobability distribution in quantum mechanics, smooths the Wigner function to ensure non-n...

Optics Phase Space State Quasiprobability

7.7 Good

18

qudit

A qudit is a generalization of the qubit, representing a quantum system with *d* possible states—where *d* is an integer...

Computing Information State D Level

7.6 Good

19

qutrit

A qutrit is a quantum bit that can exist in three distinct states—analogous to the binary 0 and 1 of classical bits—allo...

Computing Information State Three Level

7.5 Good

20

NOON state

NOON states are entangled quantum systems where both possibilities of a property (like spin) exist simultaneously until...

Optics Entanglement Metrology State

7.3 Good