Near perfect mode overlap between independently seeded, gain-switched lasers
arXiv:1605.04759 · doi:10.1364/OE.24.017849
Abstract
We drastically improve the mode overlap between independently seeded, gain-switched laser diodes operating at gigahertz repetition rates by implementing a pulsed light seeding technique. Injecting pulsed light reduces the emission time jitter and enables frequency chirp synchronization while maintaining random optical phases of the emitted laser pulses. We measure interference of these pulsed sources both in the macroscopic regime, where we demonstrate near perfect mode overlap, and in the single photon regime, where we achieve a Hong-Ou-Mandel dip visibility of 0.499+/-0.004, thus saturating the theoretical limit of 0.5. The measurement results are reproduced by Monte-Carlo simulations with no free parameters. Our light source is an ideal solution for generation of high rate, indistinguishable coherent pulses for quantum information applications.
17 pages, 5 figures, 2 tables
References in corpus (4)
- Experimental Demonstration of Polarization Encoding Measurement-Device-Independent Quantum Key Distribution
- Quantum cryptography without detector vulnerabilities using optically-seeded lasers
- Robust random number generation using steady-state emission of gain-switched laser diodes
- Interference of short optical pulses from independent gain-switched laser diodes for quantum secure communications
Cited by in corpus (10)
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- Quantum noise extraction from the interference of laser pulses in optical quantum random number generator
- Bounding the outcome of a two-photon interference measurement using weak coherent states
- Bright Heralded Single-Photon Source Saturating Theoretical Single-photon Purity
- Reference-Beam Attacks against Twin-Field Quantum Key Distribution using Optical Injection Locking
- Mechanisms and Opportunities for Tunable High-Purity Single Photon Emitters: A Review of Hybrid Perovskites and Prospects for Bright Squeezed Vacuum