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Observation of the Spin Hall Effect of Light via Weak Measurements
Oleh:
Hosten, Onur
;
Kwiat, Paul
Jenis:
Article from Bulletin/Magazine
Dalam koleksi:
SCIENCE (keterangan: ada di Proquest) vol. 319 no. 5864 (Feb. 2008)
,
page 787-789.
Topik:
Spin Hall Effect of Light
;
Weak Measurements
Ketersediaan
Perpustakaan FK
Nomor Panggil:
S01.K.2008.02
Non-tandon:
1 (dapat dipinjam: 0)
Tandon:
tidak ada
Lihat Detail Induk
Isi artikel
We have detected a spin-dependent displacement perpendicular to the refractive index gradient for photons passing through an air-glass interface. The effect is the photonic version of the spin Hall effect in electronic systems, indicating the universality of the effect for particles of different nature. Treating the effect as a weak measurement of the spin projection of the photons, we used a preselection and postselection technique on the spin state to enhance the original displacement by nearly four orders of magnitude, attaining sensitivity to displacements of ~1 angstrom. The spin Hall effect can be used for manipulating photonic angular momentum states, and the measurement technique holds promise for precision metrology.
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