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Sanchayan Dutta

Davis, CA, USA

https://sanchayandutta.cs.ucdavis.edu

I'm a graduate student in computer science at UC Davis.

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Top Questions
44 votes

How does a quantum computer do basic math at the hardware level?

architecture physical-realization superconducting-quantum-computing asked Mar 24, 2018 at 5:37
quantumcomputing.stackexchange.com

36 votes

How are quantum gates implemented in reality?

quantum-gate physical-realization asked Mar 23, 2018 at 11:12
quantumcomputing.stackexchange.com

36 votes

Introductory material for quantum machine learning

algorithm resource-request machine-learning quantum-enhanced-machine-learning asked May 26, 2018 at 23:24
quantumcomputing.stackexchange.com

28 votes

Why does the "Phase Kickback" mechanism work in the Quantum phase estimation algorithm?

quantum-state quantum-fourier-transform phase-estimation phase-kickback asked Jul 1, 2018 at 19:47
quantumcomputing.stackexchange.com

26 votes

What exactly are anyons and how are they relevant to topological quantum computing?

topological-quantum-computing anyons asked May 11, 2018 at 15:17
quantumcomputing.stackexchange.com

25 votes

Why do optical quantum computers not have to be kept near absolute zero while superconducting quantum computers do?

quantum-computer optical-quantum-computing architecture superconducting-quantum-computing asked Mar 14, 2018 at 21:54
quantumcomputing.stackexchange.com

22 votes

What is the use of categorical quantum mechanics?

foundations category-theory asked May 3, 2018 at 9:10
quantumcomputing.stackexchange.com

22 votes

Density matrices for pure states and mixed states

qubit-state quantum-state density-matrix asked Jun 14, 2018 at 18:55
quantumcomputing.stackexchange.com

19 votes

What is the mathematical justification for the "universality" of the universal set of quantum gates (CNOT, H, Z, X and π/8)?

quantum-gate universal-gates gate-synthesis asked Mar 23, 2018 at 19:56
quantumcomputing.stackexchange.com

18 votes

If quantum gates are reversible how can they possibly perform irreversible classical AND and OR operations?

quantum-gate unitarity asked Mar 15, 2018 at 10:58
quantumcomputing.stackexchange.com

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Top Answers
108
Is quantum computing just pie in the sky?
quantumcomputing.stackexchange.com

28
How are quantum gates implemented in reality?
quantumcomputing.stackexchange.com

27
Why is it important to eliminate the garbage qubits?
quantumcomputing.stackexchange.com

23
How does bra-ket notation work?
quantumcomputing.stackexchange.com

23
What are the best structured courses available online on quantum computing?
quantumcomputing.stackexchange.com

22
How to input 2 qubits in 2 Hadamard gates?
quantumcomputing.stackexchange.com

20
Quantum circuits explain algorithms, why didn't classical circuits?
quantumcomputing.stackexchange.com

17
If quantum gates are reversible how can they possibly perform irreversible classical AND and OR operations?
quantumcomputing.stackexchange.com

16
What is the physical representation of a qubit?
quantumcomputing.stackexchange.com

16
Why can the Discrete Fourier Transform be implemented efficiently as a quantum circuit?
quantumcomputing.stackexchange.com

15
Is there any general statement about what kinds of problems can be solved more efficiently using a quantum computer?
quantumcomputing.stackexchange.com

14
What is the meaning of the state $|1\rangle-|1\rangle$?
quantumcomputing.stackexchange.com

13
Implementing "Classical AND Gate" and "Classical OR Gate" with a quantum circuit
quantumcomputing.stackexchange.com

13
What does "bipartite" mean?
quantumcomputing.stackexchange.com

12
The algorithm of the new quantum factoring record 1,099,551,473,989
quantumcomputing.stackexchange.com

12
Does a study guide exist that starts from a "purely CS background" and advances towards "making a new quantum programming language"?
quantumcomputing.stackexchange.com

11
How to implement the 4 Bell states on the IBM Q (composer)?
quantumcomputing.stackexchange.com

11
Density matrices for pure states and mixed states
quantumcomputing.stackexchange.com

10
Measuring in standard basis meaning
quantumcomputing.stackexchange.com

10
Significance of the term "diffusion" in Grover's diffusion operator
quantumcomputing.stackexchange.com

9
What can we learn from 'quantum bogosort'?
quantumcomputing.stackexchange.com

9
Representation of real numbers in quantum computers
quantumcomputing.stackexchange.com

9
Where does precisely the difficulty in exponentiating a Hamiltonian $H$ in the quantum simulation problem lay?
quantumcomputing.stackexchange.com

9
What applications does Grover's Search Algorithm have?
quantumcomputing.stackexchange.com

9
What kind of real-world problems (excluding cryptography) can be solved efficiently by a quantum algorithm?
quantumcomputing.stackexchange.com

8
Is error correction necessary?
quantumcomputing.stackexchange.com

8
What is "linear" in linear entropy?
quantumcomputing.stackexchange.com

8
How do you write a simple program for a D-Wave device?
quantumcomputing.stackexchange.com

8
Why are $d^2$ dimensions required to describe a density matrix?
quantumcomputing.stackexchange.com

8
What is the purpose of the TDG gate in QISKit?
quantumcomputing.stackexchange.com

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