Finance

Quantum entanglement

Physics

Mathematics

Truncation (statistics)

High fidelity

Algorithm

Optics

Statistical physics

Machine learning

Order (exchange)

Economics

Acoustics

Fidelity

Focus (optics)

Computer science

Quantum mechanics

State (computer science)

Telecommunications

Quantum

Physical review. A/Physical review, A

We generalize the concept of optical state truncation and noiseless linear amplification to enable truncation of the Fock-state expansion of an optical state to higher order and to simultaneously amplify it using linear optics. The resulting generalized quantum scissors are more efficient for noiseless linear amplification than employing multiple scissors in parallel and are experimentally practical. As a particular example, we focus on a third-order scissor device and demonstrate advantages in terms of fidelity with the target state, probability of success, distillable entanglement, and the amount of non-Gaussianity introduced.

Generalized quantum scissors for noiseless linear amplification