Observation of edge magnetoplasmon squeezing in a quantum Hall conductor
arXiv:2210.04279 · doi:10.1103/PhysRevLett.130.106201
Abstract
Squeezing of the quadratures of the electromagnetic field has been extensively studied in optics and microwaves. However, previous works focused on the generation of squeezed states in a low impedance () environment. We report here on the demonstration of the squeezing of bosonic edge magnetoplasmon modes in a quantum Hall conductor whose characteristic impedance is set by the quantum of resistance (), offering the possibility of an enhanced coupling to low-dimensional quantum conductors. By applying a combination of dc and ac drives to a quantum point contact, we demonstrate squeezing and observe a noise reduction 18\% below the vacuum fluctuations. This level of squeezing can be improved by using more complex conductors, such as ac driven quantum dots or mesoscopic capacitors.
6+2 pages, 3+1 figures
References in corpus (12)
- An On-Demand Coherent Single Electron Source
- Fractional statistics in anyon collisions
- Coherence and Indistinguishability of Single Electrons Emitted by Independent Sources
- Experimental Test of the High-Frequency Quantum Shot Noise Theory in a Quantum Point Contact
- The relaxation time of a chiral quantum R-L circuit
- Antibunched photons emitted by a quantum point contact out of equilibrium
- Observation of inter-edge magnetoplasmon mode in a degenerate two-dimensional electron gas
- Photon-assisted tunneling with non-classical light
- Microwave photons emitted by fractionally charged quasiparticles
- Transmission lines and resonators based on quantum Hall plasmonics: electromagnetic field, attenuation and coupling to qubits
- A high sensitivity ultra-low temperature RF conductance and noise measurement setup
- Characterization of helical Luttinger liquids in microwave stepped-impedance edge resonators