Related Experiment Video
Updated: Jun 13, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Photonic entanglement-assisted quantum low-density parity-check encoders and decoders
1Electrical and Computer Engineering, University of Arizona, 1230 E. Speedway Boulevard, Tucson, Arizona 85721, USA. ivan@ece.arizona.edu
Abstract:
I propose encoder and decoder architectures for entanglement-assisted (EA) quantum low-density parity-check (LDPC) codes suitable for all-optical implementation. I show that two basic gates needed for EA quantum error correction, namely, controlled-NOT (CNOT) and Hadamard gates can be implemented based on Mach-Zehnder interferometer. In addition, I show that EA quantum LDPC codes from balanced incomplete block designs of unitary index require only one entanglement qubit to be shared between source and destination.
Related Concept Videos
Phasor Arithmetics
When the derivative of a sinusoid is taken in the time domain, it transforms into its corresponding phasor multiplied by j-omega (jω) in the phasor domain, where j is the imaginary unit, and ω is the angular frequency.
Quantum Numbers
Insensitive Nuclei Enhanced by Polarization Transfer (INEPT)
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)
Conservative Site-specific Recombination and Phase Variation
The recognition sites for Cre recombinase called LoxP...
¹³C NMR: ¹H–¹³C Decoupling
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...

