Plus, it takes no liquid helium or nitrogen levels to bring these beauties into 
action and production. QC is arriving, but I would have figured that it digital 
computing would have vanished, rather than be roaring ahead with massive 
innovations.

-----Original Message-----
From: John Clark <[email protected]>
To: 'Brent Meeker' via Everything List <[email protected]>
Sent: Fri, Sep 24, 2021 6:50 am
Subject: Sub-picosecond optical switching and amplification at the fundamental 
quantum limit at room temperature

To those who claim that Moore's law is approaching its end I would point them 
to Wednesday's issue of the journal "Nature".  IBM researchers report they have 
developed an optical replacement for the transistor that operates at room 
temperature,  requires no cooling because it approaches the quantum theoretical 
limit on energy efficiency,  and is about 1000 times faster than any existing 
transistor. More work will be required before an entire microprocessor can be 
made using these devices but I find this development to be enormously 
encouraging.

The reason it's so energy efficient is that it only takes one photon from a 
very weak laser to switch a far more powerful laser on and off. And besides 
acting as a switch it can also act as an amplifier by boosting the intensity of 
a laser beam by a factor of 23,000.
Single-photon nonlinearity at room temperature

John K Clark    See what's on my new list at  Extropolis
42h
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