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For questions about physical implementations of a quantum algorithm or other quantum information protocol. DO NOT use for questions about simulation or emulation of quantum computers, or cloud-based quantum computing services like the IBM Q Experience.
7
votes
2
answers
510
views
Improving probability of spontaneous parametric down conversion
As mentioned in an earlier question of mine, I am interested in using type one spontaneous down conversion (SPDC) in optical quantum computing. However, SPDC is a somewhat low probability occurrence - …
20
votes
1
answer
1k
views
What cryogenic systems are suitable for superconducting qubits?
Is a dilution refrigerator the only way to cool superconducting qubits down to 10 millikelvin? If not, what other methods are there, and why is dilution refrigeration the primary method?
15
votes
3
answers
1k
views
Scalability of ion trap quantum computers
My understanding is that the magnetic fields needed to hold the ions in place in ion trap quantum computers are very complex, and for that reason, currently, only 1-D computers are possible, therefore …
11
votes
2
answers
2k
views
State produced by spontaneous parametric down-conversion (SPDC)
I'm researching SPDC's efficacy for use in an optical quantum computing model and I've been trying to figure out exactly what state the photons are in when they come out (as represented by a vector, f …