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Experimental Generation and Manipulation of Quantum Squeezed Vacuum via Polarization Self-Rotation in Rb Vapor
| Content Provider | Semantic Scholar |
|---|---|
| Author | Horrom, Travis |
| Copyright Year | 2013 |
| Abstract | Nonelassical states of light are of increasing interest due to their applications in the emerging held of quan tum inform at ion processing and com m unication. Squeezed light is such a s ta te of the electrom agnetic held in which the q u an tu m noise properties are altered com pared w ith those of coherent light. Squeezed light and squeezed vacuum states are potentially useful for quantum inform ation protocols as well as optical m easurem ents, where sensitivities can be lim ited by q u an tu m noise. We experim entally study a source of squeezed vacuum resulting from t he interact ion of near-resonant light, w ith both cold and hot Rb atom s via the nonlinear polarization self-rotation effect (PSR). We investigate the op tim al conditions for noise reduction in the resulting squeezed states, reaching quadrat ure squeezing levels of up to 2.6 dB below shot noise, as well as observing noise reduction for a broad range of detect ion frequencies, from tens of kHz to several MIIz. We use th is source of squeezed vacuum a t 795 inn to further study the noise properties of these s ta tes and how they are affected by resonant atom ic interactions. This includes the use of a squeezed light p robe to give a quan tum enhancem ent to an optical m agnetom eter, as well as studying the p ropagation of squeezed vacuum in an atom ic medium under conditions of electrom agnet ically induced transparency (EIT). We also investigate the propagation of pulses of quan tum squeezed light through a dispersive atom ic m edium, where we exam ine the possibilities for quantum noise signals t raveling at sublum inal and superlum inal velocities. The interaction of squeezed light w ith resonant atom ic vapors finds various potent ial applications in bo th quan tum m easurem ents and continuous variable quan tu m memories. |
| File Format | PDF HTM / HTML |
| DOI | 10.21220/s2-a1zf-pz89 |
| Alternate Webpage(s) | https://scholarworks.wm.edu/cgi/viewcontent.cgi?article=3410&context=etd |
| Alternate Webpage(s) | http://physics.wm.edu/PhDdissertations/2013_Travis_Horrom.pdf |
| Alternate Webpage(s) | https://doi.org/10.21220/s2-a1zf-pz89 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
