Few-cycle vacuum squeezing in nanophotonics
arXiv:2201.06768 · doi:10.1126/science.abo6213
Abstract
One of the most fundamental quantum states of light is squeezed vacuum, in which noise in one of the quadratures is less than the standard quantum noise limit. Significant progress has been made in the generation of optical squeezed vacuum and its utilization for numerous applications. However, it remains challenging to generate, manipulate, and measure such quantum states in nanophotonics with performances required for a wide range of scalable quantum information systems. Here, we overcome this challenge in lithium niobate nanophotonics by utilizing ultrashort-pulse phase-sensitive amplifiers for both generation and all-optical measurement of squeezed states on the same chip. We generate a squeezed state spanning over more than 25 THz of bandwidth supporting only a few optical cycles, and measure a maximum of 4.9 dB of squeezing (11 dB inferred). This level of squeezing surpasses the requirements for a wide range of quantum information systems. Our results on generation and measurement of few-optical-cycle squeezed states in nanophotonics enable a practical path towards scalable quantum information systems with THz clock rates and open opportunities for studying non-classical nature of light in the sub-cycle regime.
8 pages, 4 figures
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Cited by in corpus (9)
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- Quantum nondemolition measurements with optical parametric amplifiers for ultrafast universal quantum information processing
- Creating large Fock states and massively squeezed states in optics using systems with nonlinear bound states in the continuum
- Wigner Function Tomography via Optical Parametric Amplification
- Ultrafast non-destructive measurement of the quantum state of light using free electrons
- Programmable time-multiplexed squeezed light source
- Broadband biphoton generation and polarization splitting in a monolithic AlGaAs chip