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“From
chromatic interferometry to a new paradigm for experimental physics"
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Date: |
Download-files: |
Time: |
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Thursday, 04 Feb 2021 |
Video-Recording for any system with MP4-support
- Video.mp4 (ca.303 Mb)
- Video_with_eng_sub.mp4 (ca. 318 Mb) |
15:15 – 16:15
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Abstract:
In conventional experiments, quantum
systems are interrogated by measurement
devices which destroy quantum coherence.
We theoretically develop the new
subject of 'chromatic interferometry' by
going beyond the usual paradigm:
we deliberately entangle experimental
samples with lab apparatuses and perform
coherent quantum operations on the joint
system to extract hidden correlations.
This enables a new and powerful method of
high-resolution imaging for multi-
wavelength sources, which has been
experimentally realized by the group of
Jian-Wei Pan.
The method has applications ranging from
astrophysics to microscopy.
More broadly, we will discuss a quantum
information-theoretic framework to
study experiments where apparatuses can be
entangled with experimental samples,
and quantum coherence is maintained
thereafter. It can be proved that for
several
'model' experiments, there is an
exponential savings in resources if the
experimentalist can entangle apparatuses
with experimental samples.
Speaker today: Jordan Cotler (Harvard)