HomeResearchCoursesEventsBlogDiscussions
Home Explore

Communities

q/algorithms q/benchmarking q/career q/cryptography q/debugging q/error-correction q/finance q/general q/hardware q/help q/latex-and-writing q/math-foundations q/memes q/news q/opportunitiesSee all...

q/help

Debugging, maths help, and beginner questions.

Public read-only access

Top Communities

1
q/algorithms
2
q/benchmarking
3
q/career
4
q/cryptography
5
q/debugging
QuantumSparkQuantumSpark

Research-grade quantum learning, papers, textbooks, mentorship, and project work for motivated students.

Platform

  • Research
  • Outputs
  • Courses

Resources

  • Blog
  • Fellowship
  • Events
  • Research Standards

Trust

  • Terms
  • Privacy
  • Cookies
  • Security
  • Research Policies

Updates

Occasional notes on new resources, workshops, and student research opportunities.

© 2026 QuantumSpark.

Built for careful learning, reproducible work, and early research fluency.

q/help

Community Hub

Debugging, maths help, and beginner questions.

PostsWikiResources
72
q/help•
u/Alice Quantum
• 7 months agoHELP

Understanding Phase Kickback in Deutsch-Jozsa

I get the math, but I don't intuitively 'feel' how the oracle bit flips the phase of the control qubit. Can someone explain it like I'm 5?

3 Comments
Share
Report
42
q/help•
u/Alice JohnsonMENTOR
• 7 months agoHELP

Why does my GHZ state have such low fidelity?

Running on `ibm_brussels`. The counts for |000> and |111> are high, but I see a lot of noise in between. Is this T1 decoherence or just readout error?

3 Comments
Share
Report