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2

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At what depth and for what architecture random quantum circuits are $1$-designs?

quantum-gate quantum-advantage random-quantum-circuit haar-distribution t-designs

modified 40 mins ago glS♦ 15.2k

0

votes

1

answer

19

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How to add label to custom operator (from matrix) controlled gate?

qiskit programming

modified 2 hours ago glS♦ 15.2k

5

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0

answers

89

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Solving linear system $Ax=b$ with exponential speed-up via binary optimization?

grovers-algorithm hhl-algorithm optimization speedup

modified 2 hours ago Martin Vesely 9,973

2

votes

1

answer

11

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How to calculate the threshold for gate fidelity?

error-correction fidelity

answered 3 hours ago DaftWullie 41k

2

votes

1

answer

16

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Doubt in Simple proof of Security of the BB84 QKD

error-correction cryptography key-distribution bb84 qkd

answered 3 hours ago DaftWullie 41k

1

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0

answers

6

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How do we calculate the offset in a QUBO formulation?

qaoa d-wave

asked 5 hours ago evil_potato 160

3

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1

answer

338

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What is the meaning of "shots" and "rounds" in Stim?

programming error-correction stim

modified 13 hours ago Peter Mortensen 131

2

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1

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39

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Does ${\rm tr}(\Pi_z\rho\Pi_z)\le p$ imply $\cal E(\rho)$ and $\cal E(\Pi_{-z}\rho\Pi_{-z})$ are close in trace distance?

quantum-operation information-theory trace-distance projection-operator

modified 14 hours ago Quantum Mechanic 1,544

1

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1

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49

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Why can we write $\rho=\sum_\mu q_\mu|\varphi_\mu\rangle\!\langle\varphi_\mu|$ iff $q\preceq \mathrm{spec}(\rho)$?

quantum-state textbook-and-exercises majorization

modified 19 hours ago Danylo Y 4,620

17

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361

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Quantum simulation of environment-assisted quantum walks in photosynthetic energy transfer

architecture experiment decoherence quantum-walks biology

modified 22 hours ago CommunityBot 1

4

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135

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Prove that $A\preceq B$ implies $A=\Psi(B)$ for some channel $\Psi$

entanglement textbook-and-exercises quantum-operation locc-operation majorization

modified 23 hours ago glS♦ 15.2k

1

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0

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How many single and double qubit gates are required to create a uniform superposition of vertices of a Johnson Graph J(n,r)?

quantum-gate quantum-state circuit-construction

modified yesterday glS♦ 15.2k

15

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1

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615

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What is quantum t-design (intuitive understanding)?

error-correction randomised-benchmarking t-designs

modified yesterday glS♦ 15.2k

5

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1

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137

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Aproximating unitaries with elements from a t-design

quantum-gate circuit-construction universal-gates t-designs

modified yesterday glS♦ 15.2k

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