Two-boson quantum interference in time
arXiv:2012.15165 · doi:10.1073/pnas.2010827117
Abstract
The celebrated Hong-Ou-Mandel effect is the paradigm of two-particle quantum interference. It has its roots in the symmetry of identical quantum particles, as dictated by the Pauli principle. Two identical bosons impinging on a beam splitter (of transmittance 1/2) cannot be detected in coincidence at both output ports, as confirmed in numerous experiments with light or even matter. Here, we establish that partial time reversal transforms the beamsplitter linear coupling into amplification. We infer from this duality the existence of an unsuspected two-boson interferometric effect in a quantum amplifier (of gain 2) and identify the underlying mechanism as timelike indistinguishability. This fundamental mechanism is generic to any bosonic Bogoliubov transformation, so we anticipate wide implications in quantum physics.
12 pages, 9 figures
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- Multiparticle quantum interference in Bogoliubov bosonic transformations
- Atom-Mechanical Hong-Ou-Mandel Interference
- Nonlinear-linear duality for multipath quantum interference
- Equilibration of Non-interacting Photons and Quantum Signatures of Chaos
- Boson-fermion complementarity in a linear interferometer: An identity relating the determinant and permanent of a matrix