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For questions related to quantum computing and quantum information research.

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Circuit to find elements in set which matches condition

I have a set S=[1,2,3,4] from which I need to find out two subsets which has the same sum. For example S0=[1,4] and S1=[2,3]. Assume that we've a solution. One approach is to encode all states in the ...
Van Peer's user avatar
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2 answers
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Quantum algorithm that "searches" for a particular state in a bigger state vector?

Does there exist an oracle that inputs a quantum state, say for example $$ \frac{1}{2^N} \sum_{n=0}^{2^N - 1} \left | n \right > \left | f(n) \right > $$ and allows us to find $n$ such that $f(n)...
wavosa's user avatar
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2 answers
106 views

D-Wave Cloud Service - Pricing for Academic Research Project

In D-wave's web portal, I found 3 different ways that one can gain access to more QPU/Hybrid Solver time. One of them is the academic research project. Does anyone here have experience of carrying out ...
Hjaleta's user avatar
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2 votes
1 answer
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Are there other ways to understand/define code distance in stabilizer QEC codes?

I guess code distance is the same as "Hamming distance" which is related to the overlap between different "codewords" in the codespace? More technically, my understanding is that a ...
just a phase's user avatar
13 votes
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364 views

Are all quantum algorithms hidden subgroup algorithms?

I am reading the paper "Quantum Hidden Subgroup Algorithms: An Algorithmic Toolkit" by Samuel Lomonaco and Louis Kauffman from the book, "Mathematics of Quantum Computation and Quantum ...
user2521987's user avatar
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Are there any quantum standards already in development and accessible as draft documents?

Are there any quantum standards already in development and accessible as draft documents? Any documents describing standardized way of describing and ensuring common meaning/interoperability, like e.g....
Mariusz's user avatar
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What are the natural, synthetic, identical, heterogeneous qubits? Can anyone explain with examples?

I am reading a paper from 2016, "Quantum computing with atomic qubits and Rydberg interactions: Progress and challenges", In section 2.1, a debate on whether identical or heterogeneous ...
Zizheng Yang's user avatar
1 vote
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Is there any firm evidence that quantum computers can be more powerful than classical? [closed]

I am new to the field and I am very confused about the status of things right now. Sorry, but this confusion also spills into the framing of my questions. First, a more CS-style question. As far as I ...
Nikita Nemkov's user avatar
1 vote
0 answers
11 views

Sidebands in spin-oscillator coupled devices

I am researching spin-oscillator hybrid devices (particularly those coupled to NV centers), and I have come across this paper investigating the strain field of a cantilever and its effect on the NV ...
bbbb's user avatar
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4 votes
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Why is there so much hope around quantum computers? [duplicate]

The road towards quantum computers have so many obstacles, which are deeply different and more challenging than the problems that we had with the development of classical computers. There are reasons ...
user1807's user avatar
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1 answer
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Is a 2nd course on Quantum Mechanics helpful for research in Quantum Information/Computing? [closed]

I'm wavering between taking 2nd Quantum Mechanics course and not. I've just completed the 1st course that already covered fundamentals of QC. I intend to take Quantum Information Processing along with ...
Trong Duong's user avatar
0 votes
2 answers
136 views

Where to publish quantum algorithm related paper

I am an undergraduate student and I wrote a paper for my research program on quantum information. To be more specific, it is about using a novel quantum algorithm to do signal/image processing. It won ...
Sam's user avatar
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0 answers
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Quantum channels and error correction research groups

I am wondering which are the top universities or research groups through the world that are doing research in the topic of quantum error correction or quantum channels (decoherence noise models). I ...
Josu Etxezarreta Martinez's user avatar
4 votes
2 answers
112 views

Is there a "parameterized initialization" that I can apply to a QuantumRegister to re-use a circuit?

I'm working on a QuantumCircuit which measures the fidelity of one point (my "test vector") and two other points (my "data set", containing of states phi_1 and <...
GroenteLepel's user avatar
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1 answer
119 views

Is it a good idea to publish a research paper about the simulation of BB84 protocol?

I'm an engineering student. As my end of year project I've simulated BB84 protocol using simulaqron(python). I'm thinking about publishing a paper about this simulation. I haven't published any ...
yassine tech's user avatar
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1 answer
559 views

How to use Tensorflow and Qiskit to make a quantum neural network and recognize handwriting?

How to use Tensorflow and Qiskit to make a quantum neural network and recognize handwriting?
BELL's user avatar
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6 votes
0 answers
88 views

Speedup for spatial search problem using quantum walks

Given a graph $G$ and a set of marked vertices $M$, spatial search problem is the problem of finding a marked vertex. A classical approach is to perform a random walk on the graph to find out a marked ...
usercs's user avatar
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6 votes
2 answers
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What are mailing lists that advertise conferences and academic positions in the area of quantum computing?

I am aware of Oxford's Quantum Foundations mailing list that regularly advertises conferences and openings for academic positions related to quantum theory. What are other mailing lists that advertise ...
John's user avatar
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2 votes
1 answer
160 views

Is Industry or PhD programs best for someone wanting to go to quantum machine learning? [closed]

Is Industry and the companies including IBMa and D-wave etc or PhD research programs best for someone wanting to go to quantum statistical/mathematical machine learning in the United States? I mean ...
user avatar
6 votes
1 answer
908 views

What is the state of the art on Quantum Random Access Memories? [duplicate]

I realized that Quantum Random Access Memory (qRAM) was proposed to make quantum computers more similar to classical one. Currently quantum computers have very constrained memory, given only quantum ...
Martin Vesely's user avatar
6 votes
1 answer
203 views

Reversal of time arrow on IBM Q

It is well known that a quantum computer is reversible. This means that it is possible to derive an input quantum state $|\psi_0\rangle$ from an output $|\psi_1\rangle$ of an algorithm described by a ...
Martin Vesely's user avatar
3 votes
1 answer
212 views

Can quantum entanglement be expressed in terms of knot theory?

While writing this answer I was wondering whether the analogy of the nature of entanglement in the GHZ state with Borromean rings is more than a mere analogy (cf. Aaronson's lecture). The question ...
Sanchayan Dutta's user avatar
4 votes
0 answers
88 views

Active areas of research for NISQ algorithms

What areas of research in NISQ algorithms have heavy focus? I'm interested in quantum chemistry algorithms because of previous work (e.g. VQEs), and I'd love to learn more about other near-term ...
C. Kang's user avatar
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1 vote
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Could any of these university courses be a good MSc for a quantum computing future job/research? [closed]

I'm a Politecnico di Torino student currently enrolled - and close to graduate - in Electronics and Communications engineering. As such, I know the basics of analog electronics, digital electronics, ...
Maurizio Carcassona's user avatar
3 votes
1 answer
123 views

Academic journals dedicated to quantum algorithms

Are there, any journals out there that have been steadily publishing, or are dedicated to, research on existing or new and innovative quantum algorithms? Generalist titles are fine, but they can also ...
develarist's user avatar
5 votes
0 answers
230 views

Could quantum computing help solving the Eternity II puzzle?

First of all, since I am not a specialist, sorry if this question does not make sense. But, I can't resist to ask as I have not found any direct information while googling. I hope some of you know/...
Patrice's user avatar
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2 votes
3 answers
1k views

Ideas for school-level project on quantum computing

I am a Swiss student and have 2 years left at school. In these 2 years, I have to do a special piece of work on a specific subject. I decided to do it on quantum computers. For this, I have to find a ...
BrockenDuck's user avatar
2 votes
1 answer
114 views

Would all quantum computing research be for naught if a powerful enough quantum computer is never built?

Let's say 1000 years from now powerful quantum computers are still a matter of fiction and no useful calculations can be carried out using them. Would this mean that the entire industry of quantum ...
JonathanReez's user avatar
3 votes
1 answer
78 views

General Master Equation with Decoherence Query

The following general master equation (from this paper 'Dynamical quantum correlations of Ising models on arbitrary lattice and their resilience to decoherence') describes the various types of ...
John Doe's user avatar
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4 votes
1 answer
133 views

Quantum Computing Project Inquiry [duplicate]

I am wondering if there is a way to get advice\feedback here about the following: I am about to start a MS physics program. I am interested in quantum computing and my department has the option of ...
Enrique Segura's user avatar
1 vote
0 answers
34 views

Which journals and conferences would be most appropriate for new number-theoretic quantum algorithms? [closed]

Non-super-slow review process and non-super-slow publication should take precedence.
user45491's user avatar
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3 votes
0 answers
213 views

What can be some bachelor thesis ideas in quantum random walks? [closed]

Note: Cross-posted on Theoretical Computer Science Stack Exchange. I am an undergraduate, reading about quantum information and quantum technology. For about some time, I have been interested in the ...
Nimish Mishra's user avatar
21 votes
1 answer
2k views

Is there a list of accessible open problems in quantum computing from a theoretical computer science perspective?

(Classical) theoretical computer science (TCS) has a number of outstanding open problems that can easily be instantiated in a manner that is accessible to a wider general public. For example, ...
Mark Spinelli's user avatar
1 vote
1 answer
590 views

What can be a mini research project based on Grover's algorithm or the Deutsch Jozsa algorithm?

I need to work out a research project on quantum computing as a part of my curriculum. I was wondering how to implement something theoretically with the basic knowledge I have. I have learned about ...
Debojyoti Sarkar's user avatar
-2 votes
1 answer
178 views

Future research in quantum computation and information [closed]

What are some of the most probable directions for quantum computation to go in the future and what research still needs to be done in the field?
Logan's user avatar
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2 votes
0 answers
81 views

Pointer to related research (paper)

Recently, I was reading a paper (arXiv:1804.03719 [cs.ET]), which had the following quote (the most relevant part has been bolded), Quantum algorithms are often grouped into number-theory-based, ...
Arthur-1's user avatar
  • 505
4 votes
1 answer
107 views

Quantum Computing Research Papers, on puzzles or game theory

Are there any research papers focused on implementing a game/puzzle or game theory in Quantum Computing.
Ibukun Oladunjoye's user avatar
17 votes
4 answers
5k views

What is a list of research journals publishing quantum computing articles?

Can anyone give me a list of different research journals that has quantum computing articles that I can use.
Ibukun Oladunjoye's user avatar
9 votes
2 answers
2k views

What can tensor networks mean for quantum computing?

I am trying to understand what the importance of tensor networks is (or will/could be) for quantum computing. Does it make sense to study tensor networks deeply and develop them further to help pave ...
dumkar's user avatar
  • 199
4 votes
1 answer
183 views

Ethics: Publishing a corrected version of a moderately cited paper having several minor errors

This is the QCSE version of What should you do if you spotted a non-trivial error in a highly cited paper? (maybe replace "highly cited" with "moderately cited" and "a non-trivial" with "several minor"...
Sanchayan Dutta's user avatar
7 votes
3 answers
201 views

Can the theory of quantum computation assist in the miniaturization of transistors?

In his inaugural lecture, Ronald de Wolf states People are working with quantum objects, but trying to make them behave as classical as possible. (...) Instead of suppressing them to make systems ...
Discrete lizard's user avatar
9 votes
2 answers
267 views

Are there any experimental groups currently measuring quantum contextuality?

I work as a theorist with my current research interests in "quantum contextuality". For those perusing the question, this is essentially a generalization of non-locality where we can show a quantum ...
Emily Tyhurst's user avatar