An integrated circuit for generating distributable and unconditional entanglement at microwave frequencies

Entanglement, the unique feature of quantum mechanics, is the central resource of quantum information. In the strategy of continuous-variables quantum information processing, unconditional and distributable entanglement can be obtained by combining two squeezed states on a balanced beam splitter. Our group has recently demonstrated the generation of squeezed microwave states using a Josephson Parametric Amplifier [1] and implemented on-chip balanced beam splitters [2]. This talk will present a device that combines all these components on a single chip. The design requirements for such an ``on-chip entangler'' of the electromagnetic field modes will be discussed. \\[4pt] [1] M. A. Castellanos-Beltran et al, Nature Physics, 4, 929 (2008). \\[0pt] [2] Hsiang-Sheng Ku et al, arXiv:1010.3232v1