Circuit Repository

/quantum-advantage-kernel

15 hours

Quantum Kernel Advantage (Huang 2021)

Quantum Advantage in Learning - Huang et al. 2021 Overview Reproduction of the quantum kernel advantage paper -- establi...

3-Qubit Bit Flip Code

3-Qubit Bit-Flip Code What You'll Learn: How quantum error correction encodes logical qubits into physical qubits How sy...

IntermediateError_Correction+3

qiskit31

/maxcut

QAOA for MaxCut

QAOA for MaxCut Problem What You'll Learn: How QAOA encodes combinatorial optimization problems into quantum circuits Ho...

IntermediateMachine_Learning+4

13 hours

/angle-encoding

Angle Encoding

Angle Encoding (Rotation Encoding) Overview Angle encoding is the simplest and most hardware-efficient quantum data enco...

/data-reuploading-classifier

Data Re-uploading (Pérez-Salinas 2020)

Data Re-uploading Quantum Classifier Reproduction of Perez-Salinas et al. (2020) — demonstrating that a single qubit wit...

VQD Algorithm

Variational Quantum Deflation (VQD) — General Implementation What You'll Learn: How VQD scales to larger systems (4 qubi...

H2 Excited States (VQD)

VQE for H2 Excited States — Variational Quantum Deflation (VQD) What You'll Learn: How to find excited states of molecul...

QAOA for Knapsack

QAOA for 0/1 Knapsack Problem What You'll Learn: How to map a constrained optimization problem to an unconstrained QUBO ...

IntermediateError_Correction+5

qiskit30

13 hours

/surface-code

Surface Code (Distance-3)

Surface Code (Distance-3) Overview The surface code is a topological quantum error correcting code and the leading candi...

qiskit171

/variational-classifier-mitarai

/h2-ground-state

VQE for H2 Molecule

VQE for H2 Molecule Ground State What You'll Learn: How the Variational Quantum Eigensolver (VQE) combines quantum circu...

IntermediateChemistry+3

qiskit20

17 hours

Quantum Circuit Learning (Mitarai 2018)

Quantum Circuit Learning - Mitarai et al. 2018 Overview Faithful reproduction of the Quantum Circuit Learning (QCL) pape...

Bell State

Bell State What You'll Learn: How to create quantum entanglement — the phenomenon Einstein called "spooky action at a di...

BeginnerEntanglement+2

qiskit24

15 hours

/graph-coloring

QAOA for Graph Coloring

QAOA for Graph 2-Coloring What You'll Learn: How QAOA encodes constraint satisfaction problems into quantum circuits How...

/quantum-fourier-transform

Quantum Fourier Transform

Quantum Fourier Transform (QFT) What You'll Learn: How the quantum analog of the Fourier transform works — the key subro...

IntermediateTransform+3

qiskit41

/heh-plus-ground-state

VQE for HeH+ Ion

VQE for HeH+ Molecule Ground State What You'll Learn: How VQE handles heteronuclear molecules with asymmetric Hamiltonia...

IntermediateChemistry+4

qiskit20

IntermediateMachine_Learning+4

/uccsd-ansatz

UCCSD Ansatz

UCCSD Ansatz What You'll Learn: How the gold-standard quantum chemistry ansatz encodes electron correlation into a param...

Data Re-uploading Classifier

Data Re-uploading Classifier Overview Data re-uploading is a quantum classification technique that achieves universal ap...

qiskit10

/tsp

QAOA for TSP

QAOA for Traveling Salesman Problem (TSP) What You'll Learn: How QAOA handles constrained optimization (not just simple ...