Title:
Strong Low-Frequency Squeezed Light from Dual-Seeded Four-Wave Mixing
Strong Low-Frequency Squeezed Light from Dual-Seeded Four-Wave Mixing
Speaker:
吳孟昌 (Meng-Chang Wu)
吳孟昌 (Meng-Chang Wu)
Time:
05/05 (Sat.) 6 pm PDT, 7 pm MDT, 8 pm CDT, 9 pm EDT
05/06 (Sun.) 9 am Taiwan
*注意：本週演講時間略有調整
05/05 (Sat.) 6 pm PDT, 7 pm MDT, 8 pm CDT, 9 pm EDT
05/06 (Sun.) 9 am Taiwan
Keywords:
Physics, Quantum physics, Quantum measurement, Four-wave mixing
Physics, Quantum physics, Quantum measurement, Four-wave mixing
為配合本研究發表時程，本次錄影將延遲至年底上傳
Abstract:
Quantum correlated twin beams generate entanglement that can be used as a resource for quantum information processing and quantum communication. Furthermore, intensity-difference squeezing at low-frequencies has applications such as quantum calibration of large area photodiodes. One way to generate these twin beams is by performing four-wave mixing (4WM) in a hot rubidium vapor. In previous experiments, the imbalanced power between the seeded probe beam and the conjugate beam limited the squeezing to frequencies above a few kilohertz. Here, by locking our diode laser via polarization spectroscopy and utilizing a “dual-seed” technique, we achieve intensity difference squeezing at frequencies as low as 10 Hz.
Quantum correlated twin beams generate entanglement that can be used as a resource for quantum information processing and quantum communication. Furthermore, intensity-difference squeezing at low-frequencies has applications such as quantum calibration of large area photodiodes. One way to generate these twin beams is by performing four-wave mixing (4WM) in a hot rubidium vapor. In previous experiments, the imbalanced power between the seeded probe beam and the conjugate beam limited the squeezing to frequencies above a few kilohertz. Here, by locking our diode laser via polarization spectroscopy and utilizing a “dual-seed” technique, we achieve intensity difference squeezing at frequencies as low as 10 Hz.
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