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22 Questions

Views Newest Activity Votes

votes

answers

516

views

Are there problems in which quantum computers are known to provide an exponential advantage?

complexity-theory speedup

Dec 24 at 22:51 tparker 420

votes

answers

992

views

How is the oracle in Grover's search algorithm implemented?

complexity-theory circuit-construction algorithm

Mar 7 at 11:15 Greenstick 166

votes

answers

474

views

Why can the Discrete Fourier Transform be implemented efficiently as a quantum circuit?

algorithm speedup quantum-fourier-transform

Aug 7 at 21:32 heather♦ 1,974

votes

answer

267

views

What protocols have been proposed to implement quantum RAMs?

quantum-memory

Mar 30 '18 at 9:42 James Wootton 6,716

votes

answers

304

views

Why do error correction protocols only work when the error rates are already significantly low to begin with?

error-correction fault-tolerance

Dec 23 at 14:14 Sanchayan Dutta♦ 6,696

votes

answer

176

views

How long does quantum annealing take to find the solution to a given problem?

speedup annealing

Apr 2 '18 at 19:20 glS 4,465

votes

answers

481

views

How should different quantum computing devices be compared?

architecture technical-standards nisq

Jan 1 at 10:16 Sanchayan Dutta♦ 6,696

votes

answers

886

views

What is the difference between transmon and Xmon qubits?

physical-qubit architecture superconducting-quantum-computing

Sep 8 at 6:21 DanielSank 974

votes

answer

296

views

How are quantum gates realised, in terms of the dynamic?

quantum-gate architecture physical-realization hamiltonian-simulation dynamics

Dec 23 at 14:17 Sanchayan Dutta♦ 6,696

votes

answer

109

views

What kinds of ions do trapped ion quantum computers use?

physical-realization architecture experiment ion-trap-quantum-computing

Mar 30 '18 at 14:22 pyramids 1,684

votes

answer

views

Why does (almost) every pair of Hamiltonians generate, through repeated commutation, the whole space of Hermitian matrices?

simulation

Jun 13 at 5:17 Sanchayan Dutta♦ 6,696

votes

answers

314

views

Does quantum control allow to implement any gate?

quantum-gate quantum-control

Apr 23 '18 at 11:10 agaitaarino 1,774

votes

answer

173

views

How are magic states defined in the context of quantum computation?

speedup fault-tolerance

Aug 13 at 6:25 DaftWullie 15.8k

votes

answers

146

views

What is the difference between quantum control and quantum optimal control?

quantum-gate quantum-control

Mar 30 '18 at 11:52 glS 4,465

votes

answers

views

Are bucket-brigate (q)RAM architectures also advantageous in the classical case?

quantum-memory

Jun 18 at 13:26 glS 4,465

votes

answer

views

What is the hidden subgroup in Simon's problem?

algorithm simons-algorithm hidden-subgroup-problem

Mar 17 at 21:01 glS 4,465

votes

answer

106

views

What are the preferred numerical methods to simulate the evolution of a state through a time-dependent Hamiltonian?

simulation dynamics

Jul 30 at 15:50 glS 4,465

votes

answer

views

Computing of the action of the amplification operator $\mathbf Q$ over $|\Psi_i\rangle$ in the quantum amplitude amplification algorithm

algorithm amplitude-amplification

Jul 24 at 16:41 glS 4,465

votes

answer

views

Why does the quantum linear inversion algorithm allow to implement $e^{-ig(\rho)}$ efficiently using multiple copies of $\rho$?

algorithm hhl-algorithm

Jul 11 at 7:17 biryani 481

votes

answers

views

Construction of optimal ensemble to show quantum steerability

entanglement nonclassicality

Feb 12 at 19:32 glS 4,465

votes

answer

views

Why does Fourier sampling allow to efficiently recover hidden subgroups?

algorithm quantum-fourier-transform fourier-sampling hidden-subgroup-problem

Jan 20 at 9:34 Sanchayan Dutta♦ 6,696

votes

answer

views

Why is the $N$-qubit stabilizer group abelian?

error-correction stabilizer-code stabilizer-state

Oct 25 at 20:25 Niel de Beaudrap 6,220

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22 Questions

Are there problems in which quantum computers are known to provide an exponential advantage?

How is the oracle in Grover's search algorithm implemented?

Why can the Discrete Fourier Transform be implemented efficiently as a quantum circuit?

What protocols have been proposed to implement quantum RAMs?

Why do error correction protocols only work when the error rates are already significantly low to begin with?

How long does quantum annealing take to find the solution to a given problem?

How should different quantum computing devices be compared?

What is the difference between transmon and Xmon qubits?

How are quantum gates realised, in terms of the dynamic?

What kinds of ions do trapped ion quantum computers use?

Why does (almost) every pair of Hamiltonians generate, through repeated commutation, the whole space of Hermitian matrices?

Does quantum control allow to implement any gate?

How are magic states defined in the context of quantum computation?

What is the difference between quantum control and quantum optimal control?

Are bucket-brigate (q)RAM architectures also advantageous in the classical case?

What is the hidden subgroup in Simon's problem?

What are the preferred numerical methods to simulate the evolution of a state through a time-dependent Hamiltonian?

Computing of the action of the amplification operator $\mathbf Q$ over $|\Psi_i\rangle$ in the quantum amplitude amplification algorithm

Why does the quantum linear inversion algorithm allow to implement $e^{-ig(\rho)}$ efficiently using multiple copies of $\rho$?

Construction of optimal ensemble to show quantum steerability

Why does Fourier sampling allow to efficiently recover hidden subgroups?

Why is the $N$-qubit stabilizer group abelian?