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Efficient entanglement distillation without quantum memory
Daniela Abdelkhalek, Mareike Syllwasschy, Nicolas J. Cerf +2
Entanglement distribution between distant parties is an essential component to most quantum communication protocols. Unfortunately, decoherence effects such as phase noise in optic…
Proposal for Gravitational-Wave Detection Beyond the Standard Quantum Limit via EPR Entanglement
Yiqiu Ma, Haixing Miao, Belinda Heyun Pang +5
The Standard Quantum Limit in continuous monitoring of a system is given by the trade-off of shot noise and back-action noise. In gravitational-wave detectors, such as Advanced LIG…
Squeezed states of light and their applications in laser interferometers
Roman Schnabel
According to quantum theory the interactions between physical systems are quantized. As a direct consequence, measurement sensitivities are fundamentally limited by quantization no…
Reduction of Classical Measurement Noise via Quantum-Dense Metrology
Melanie Ast, Sebastian Steinlechner, Roman Schnabel
Quantum-dense metrology (QDM) constitutes a special case of quantum metrology in which two orthogonal phase space projections of a signal are simultaneously sensed beyond the shot…
Gaussian entanglement distribution with gigahertz bandwidth
Stefan Ast, Melanie Ast, Moritz Mehmet +1
The distribution of entanglement with Gaussian statistic can be used to generate a mathematically-proven secure key for quantum cryptography. The distributed secret key rate is lim…
Generalized analysis of quantum noise and dynamic back-action in signal-recycled Michelson-type laser interferometers
Farid Ya. Khalili, Sergey P. Tarabrin, Roman Schnabel +1
We analyze the radiation pressure induced interaction of mirror motion and light fields in Michelson-type interferometers used for the detection of gravitational waves and for fund…