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| MEASUREMENT OF THE SINGLE-PHOTON TUNNELING TIME |
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| Author(s): STEINBERG AM, KWIAT PG, CHIAO RY |
| Source: PHYSICAL REVIEW LETTERS Volume: 71 Issue: 5 Pages: 708-711 Published: AUG 2 1993 |
| Times Cited: 488 References: 25 |
| Abstract: Using a two-photon interferometer, we have measured the time delay for a photon to tunnel across a barrier consisting of a 1.1-mum-thick 1D photonic band-gap material. The peak of the photon wave packet appears on the far side of the barrier 1.47 +/- 0.21 fs earlier than it would if it were to travel at the vacuum speed of light c. Although the apparent tunneling velocity (1.7 +/- 0.2)c is superluminal, this is not a genuine signal velocity, and Einstein causality is not violated. The measured tunneling time is consistent with the group delay (''phase time''), but not with the semiclassical time. |
| Document Type: Article |
| Language: English |
| Reprint Address: STEINBERG, AM (reprint author), UNIV CALIF BERKELEY, DEPT PHYS, BERKELEY, CA 94720 USA |
| Publisher: AMERICAN PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA |
| Subject Category: Physics, Multidisciplinary |
| IDS Number: LQ107 |
| ISSN: 0031-9007 |
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| | | | | | | | | Record from Web of Science® | | | | | | | | | |