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Re: Quantum computing practically impossible

Joseph Touch <touch@strayalpha.com> Thu, 05 November 2020 22:09 UTC

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Subject: Re: Quantum computing practically impossible
From: Joseph Touch <touch@strayalpha.com>
In-Reply-To: <782c3e57-ee9f-cbc5-74c0-1b3e42b43590@necom830.hpcl.titech.ac.jp>
Date: Thu, 05 Nov 2020 14:09:04 -0800
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References: <1234528e-ef29-e81e-6c47-7bd4abb6fd53@necom830.hpcl.titech.ac.jp> <CAMm+LwhoK5RTYUA2-F9a7a-HfMNmjmUOwf=zDdAT9t7VXsUpXQ@mail.gmail.com> <20201105064427.GV1464@straasha.imrryr.org> <C088C970-C8DE-4B3F-BD54-B1E8763CE949@strayalpha.com> <782c3e57-ee9f-cbc5-74c0-1b3e42b43590@necom830.hpcl.titech.ac.jp>
To: Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>
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On Nov 5, 2020, at 1:32 PM, Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp> wrote:
> 
> Joseph Touch wrote:
> 
>> Noise isn’t the only focal point of skepticism; at least one other is
>> full-entanglement scale, which has essentially remained static for
>> decades (8-way recently leaping to 10-way).
> 
> It was considered that, once certain accuracy is obtained,
> recursive application of quantum error correction can
> increase the scale.

Regardless, I’m reporting what others are raising as concerns; they’re aware of this.

However, recursive application increases distance, not numbers of entangled parties.

Joe

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