title: Displacement of Propagating Squeezed Microwave States.
abstract: Displacement of propagating quantum states of light is a fundamental operation for quantum communication. It enables fundamental studies on macroscopic quantum coherence and plays an important role in quantum teleportation protocols with continuous variables. In our experiments, we have successfully implemented this operation for propagating squeezed microwave states. We demonstrate that, even for strong displacement amplitudes, there is no degradation of the squeezing level in the reconstructed quantum states. Furthermore, we confirm that path entanglement generated by using displaced squeezed states remains constant over a wide range of the displacement power.
authors.affiliation: Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching, Germany.
authors.forename: Kirill G
authors.initials: KG
authors.lastname: Fedorov
authors.affiliation: Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching, Germany.|Physik-Department, Technische Universität München, D-85748 Garching, Germany.|Nanosystems Initiative Munich (NIM), Schellingstraße 4, 80799 München, Germany.
authors.forename: L
authors.initials: L
authors.lastname: Zhong
authors.affiliation: Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching, Germany.|Physik-Department, Technische Universität München, D-85748 Garching, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Pogorzalek
authors.affiliation: Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching, Germany.|Physik-Department, Technische Universität München, D-85748 Garching, Germany.|Nanosystems Initiative Munich (NIM), Schellingstraße 4, 80799 München, Germany.
authors.forename: P
authors.initials: P
authors.lastname: Eder
authors.affiliation: Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching, Germany.|Physik-Department, Technische Universität München, D-85748 Garching, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Fischer
authors.affiliation: Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching, Germany.|Physik-Department, Technische Universität München, D-85748 Garching, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Goetz
authors.affiliation: Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching, Germany.|Physik-Department, Technische Universität München, D-85748 Garching, Germany.|Nanosystems Initiative Munich (NIM), Schellingstraße 4, 80799 München, Germany.
authors.forename: E
authors.initials: E
authors.lastname: Xie
authors.affiliation: Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching, Germany.|Physik-Department, Technische Universität München, D-85748 Garching, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Wulschner
authors.affiliation: RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Inomata
authors.affiliation: NEC IoT Device Research Laboratories, Tsukuba, Ibaraki 305-8501, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Yamamoto
authors.affiliation: RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan.|Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Meguro-ku, Tokyo 153-8904, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Nakamura
authors.affiliation: Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, E-48080 Bilbao, Spain.
authors.forename: R
authors.initials: R
authors.lastname: Di Candia
authors.affiliation: Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, E-48080 Bilbao, Spain.
authors.forename: U
authors.initials: U
authors.lastname: Las Heras
authors.affiliation: Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, E-48080 Bilbao, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Sanz
authors.affiliation: Physik-Department, Technische Universität München, D-85748 Garching, Germany.|Department of Physical Chemistry, University of the Basque Country UPV/EHU, Apartado 644, E-48080 Bilbao, Spain.|IKERBASQUE, Basque Foundation for Science, Maria Diaz de Haro 3, 48013 Bilbao, Spain.
authors.forename: E
authors.initials: E
authors.lastname: Solano
authors.affiliation: Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching, Germany.
authors.forename: E P
authors.initials: EP
authors.lastname: Menzel
authors.affiliation: Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching, Germany.|Physik-Department, Technische Universität München, D-85748 Garching, Germany.|Nanosystems Initiative Munich (NIM), Schellingstraße 4, 80799 München, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Deppe
authors.affiliation: Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Marx
authors.affiliation: Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, D-85748 Garching, Germany.|Physik-Department, Technische Universität München, D-85748 Garching, Germany.|Nanosystems Initiative Munich (NIM), Schellingstraße 4, 80799 München, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Gross