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Stable control of 10 dB two-mode squeezed vacuum states of light
Tobias Eberle, Vitus Händchen, Roman Schnabel
Continuous variable entanglement is a fundamental resource for many quantum information tasks. Important protocols like superactivation of zero-capacity channels and finite-size qu…
Experimental entanglement distribution by separable states
Christina E. Vollmer, Daniela Schulze, Tobias Eberle +3
The distribution of entanglement between macroscopically separated parties represents a crucial protocol for future quantum information networks. Surprisingly, it has been theoreti…
Observation of one-way Einstein-Podolsky-Rosen steering
Vitus Händchen, Tobias Eberle, Sebastian Steinlechner +4
The distinctive non-classical features of quantum physics were first discussed in the seminal paper by A. Einstein, B. Podolsky and N. Rosen (EPR) in 1935. In his immediate respons…
Continuous-wave non-classical light with GHz squeezing bandwidth
Stefan Ast, Aiko Samblowski, Moritz Mehmet +3
Squeezed states can be employed for entanglement-based continuous-variable quantum key distribution, where the secure key rate is proportional to the bandwidth of the squeezing. We…
Strong Einstein-Podolsky-Rosen steering with unconditional entangled states
Sebastian Steinlechner, Jöran Bauchrowitz, Tobias Eberle +1
In 1935 Schrödinger introduced the terms entanglement and steering in the context of the famous gedanken experiment discussed by Einstein, Podolsky, and Rosen (EPR). Here, we repor…
Squeezed light at 1550 nm with a quantum noise reduction of 12.3 dB
Moritz Mehmet, Stefan Ast, Tobias Eberle +3
Continuous-wave squeezed states of light at the wavelength of 1550 nm have recently been demonstrated, but so far the obtained factors of noise suppression still lag behind today's…