5 ms·

they do and you can get time on one (5 qubits) right now https://quantum-computing.ibm.com/composer/files/new https://quantum-computing.ibm.com/composer/files/

they do and you can get time on one (5 qubits) right now https://quantum-computing.ibm.com/composer/files/new https://quantum-computing.ibm.com/composer/files/new if you don't think these are computers then you just don't know what a computer really is https://en.wikipedia.org/wiki/Circuit_(computer_science) https://en.wikipedia.org/wiki/Circuit_(computer_science) they're not useful at all but they're still real actual unadulterated computers.

Hedgemaster 5y ago
pls note a difference between a 'logical qubit' and a 'physical qubit'.. currently they don't have even 1 logical qubit, and for quantum computer to be of any use it should have >10k logical qubits...
- anon_tor_12345 5y ago
  >currently they don't have even 1 logical qubit wut? different QEC produce differently sized logical qubits and there are absolutely machines with enough physical qubits to amount to a logical qubit: https://www.ncbi.nlm.nih.gov/books/NBK538709/#:~:text=In%20Shor's%20QEC%20code%2C%20the,errors%20on%20the%20data%20qubit https://www.ncbi.nlm.nih.gov/books/NBK538709/#:~:text=In%20S.... and realized QEC is definitely not far off https://www.nature.com/articles/ncomms7979 https://www.nature.com/articles/ncomms7979 >for quantum computer to be of any use it should have >10k logical qubits i'm aware and yet it's false to claim that these things don't compute. for the time being they're noisy computers but they're still computers.
xondono 5y ago
By this logic a 74LS138 is a “digital computer”. It’s limited because it has only 3 bits, but if you play with the input bits, the output bits change!
- anon_tor_12345 5y ago
  you're trying to say because a decoder maps n -> 2^n that it's comparable to a QC. lol. my friend you clearly don't understand interference and entanglement. btw the circuits in quantum circuits clearly aren't just combinational since they evolve in time.
  - xondono 5y ago
    No I’m not, all I’m saying is that by OPs logic, I can claim to have a computer with only a part of it. “It’s not very useful but it can make computations” is a very low bar to pass, and very basic discrete (classical) logic can clear that without problems.
    - anon_tor_12345 5y ago
      you do realize that ENIAC, i.e. the computer that arguably helped the US win ww2, only had about 15 bits right?

Hedgemaster 5y ago

pls note a difference between a 'logical qubit' and a 'physical qubit'.. currently they don't have even 1 logical qubit, and for quantum computer to be of any use it should have >10k logical qubits...

anon_tor_12345 5y ago
>currently they don't have even 1 logical qubit wut? different QEC produce differently sized logical qubits and there are absolutely machines with enough physical qubits to amount to a logical qubit: https://www.ncbi.nlm.nih.gov/books/NBK538709/#:~:text=In%20Shor's%20QEC%20code%2C%20the,errors%20on%20the%20data%20qubit https://www.ncbi.nlm.nih.gov/books/NBK538709/#:~:text=In%20S.... and realized QEC is definitely not far off https://www.nature.com/articles/ncomms7979 https://www.nature.com/articles/ncomms7979 >for quantum computer to be of any use it should have >10k logical qubits i'm aware and yet it's false to claim that these things don't compute. for the time being they're noisy computers but they're still computers.

xondono 5y ago

By this logic a 74LS138 is a “digital computer”. It’s limited because it has only 3 bits, but if you play with the input bits, the output bits change!

anon_tor_12345 5y ago
you're trying to say because a decoder maps n -> 2^n that it's comparable to a QC. lol. my friend you clearly don't understand interference and entanglement. btw the circuits in quantum circuits clearly aren't just combinational since they evolve in time.
- xondono 5y ago
  No I’m not, all I’m saying is that by OPs logic, I can claim to have a computer with only a part of it. “It’s not very useful but it can make computations” is a very low bar to pass, and very basic discrete (classical) logic can clear that without problems.
  - anon_tor_12345 5y ago
    you do realize that ENIAC, i.e. the computer that arguably helped the US win ww2, only had about 15 bits right?