1 / 13

Daniel Rohrlich, Yakov Neiman , Yonathan Japha, and Ron Folman

BGU. Two-path Interference with a Single Quantum Slit or Mirror. Daniel Rohrlich, Yakov Neiman , Yonathan Japha, and Ron Folman Department of Physics and Ilze Katz Center for Meso- and Nanoscale Science, BGU, Israel. Two path interference. 2.

tad
Download Presentation

Daniel Rohrlich, Yakov Neiman , Yonathan Japha, and Ron Folman

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. BGU Two-path Interference with a Single Quantum Slit or Mirror Daniel Rohrlich, Yakov Neiman, Yonathan Japha, and Ron Folman Department of Physics and Ilze Katz Center for Meso- and Nanoscale Science, BGU, Israel

  2. Two path interference 2

  3. Single particle superposition A single particle in a superposition of two locations is prepared in a double well potential and then the potential is turned off. The wavepackets expand and overlap after t=pMdw/h Initial state of probe+ Target: 3

  4. Condition for interference: loss of orthogonality of target states After scattering: Final state: It final target states (left and right) remain orthogonal then there Is no interference! Final state is an entangled state. The phase a have no effect. 4

  5. 1D example: One-mirror Fabry-Perot In the special case M=m: pfin=Pin Transfer of orthogonality from target to probe 5

  6. General solution for the 1D problem 6

  7. Suppression of visibility If the initial probe momentum has a spread pin 2 The probe induces an effective coherence length on the target. 7

  8. One-slit Young interference 8

  9. Transfer of orthogonality Condition for full interference 9

  10. Angular spectrum of scattering 10

  11. Visibility as a function of M/m 11

  12. Visibility as a function of pin 12

  13. Summary and conclusions • Two-path interference by scattering off a single free quantum particle in a superposition of two locations is possible. • Interference is suppressed by initial momentum spread of the probe particle or by measurement precision. • Double slit interference from a single slit is possible when the mass of the target is comparable to the mass of the probe (or smaller). • The condition for interference is loss of orthogonality of the target states or equivalently purity of the probe state. 13

More Related