Physics Expert (AMO / Quantum Information)

$80–160/hrrate as listed

micro1 is contracting AMO and quantum information physicists to build and grade benchmark problems on cascaded optical parametric amplifiers, SU(1,1) interferometry, and two-mode squeezing under loss. Contributors work as Solvers, Auditors, or Adjudicators depending on subfield depth, at an observed $80–160/hr.

Summary, eligibility guidance and screening preparation are prepared by Sidequest from the platform's posting. Check the source listing before applying.

What the work involves

You write, solve, and adjudicate hard quantum-optics problems that are used to benchmark and train frontier AI models. A typical task begins with a physical setup — a cascaded OPA chain, an SU(1,1) interferometer with unbalanced gain, a two-mode squeezed state passed through a lossy channel — and asks for a fully derived result: covariance matrices propagated through Bogoliubov transformations, sideband photocurrent spectra under homodyne detection, degradation of squeezing when loss is modeled with fictitious beamsplitters. Work splits across three tracks:

Solver — author original problems with unambiguous statements and complete, step-by-step reference solutions.
Auditor — check another contributor's derivation for algebraic errors, sign conventions, wrong vacuum-noise normalization, or claims that don't survive the lossless limit.
Adjudicator — resolve disagreements between solver and auditor and issue the final ruling on the canonical answer.

Much of the value sits in the failure modes: a model output can look impeccable and still botch a hyperbolic-identity simplification, drop a phase, or silently assume a symmetric loss that the problem didn't grant. Your job is to catch that and say precisely why it is wrong.

What the platform screens for

micro1's screen is AI-led and conversational, and it follows up. Expect to be asked how you would actually set up a covariance-matrix calculation, why a particular squeezing figure degrades the way it does under 10% loss, or what changes when the second amplifier's gain is detuned from the first. Generic familiarity is easy to detect and gets filtered; the screen rewards people who can name conventions they use, describe calculations they have personally carried through, and identify where a plausible-looking derivation breaks. A PhD (or clearly equivalent research output) in AMO physics, quantum optics, or quantum information is the baseline. No AI or machine-learning background is expected or asked for.

Logistics

Fully remote, contractor engagement, asynchronous. There are no fixed shifts; you claim tasks from a queue and deliver against per-task deadlines. Most contributors run 10–20 hours per week, though volume tracks the customer's project phase and can be uneven — periods of heavy queue followed by quiet stretches are normal. Pay in the $80–160/hr range has been observed for this role, with placement depending on track (adjudication typically sits higher than solving) and demonstrated depth; it is not a guaranteed rate.

What they look for

Physics
Bogoliubov transformations
sideband photocurrent spectra
homodyne detection
loss modelling via fictitious beamsplitters
covariance-matrix methods
squeeze-parameter hyperbolic identities

Before you apply

Would you pass this screen?

Drawn from what this listing actually requires. Answered in your browser — nothing is sent to us, and we do not store your answers.

Do you hold a PhD, or equivalent advanced research experience, in Atomic, Molecular & Optical Physics, Quantum Optics, or Quantum Information Science?
Advanced degree in AMO Physics, Quantum Optics, or Quantum Information · required
Have you personally applied Bogoliubov transformations and covariance-matrix techniques to analyze a quantum optical system in your own research or professional work?
Hands-on expertise in Bogoliubov transformations and covariance-matrix formalism · required
Have you directly worked with homodyne detection measurements or modeled sideband photocurrent spectra in the context of quantum optical systems?
Experience with homodyne detection and sideband spectra · preferred
Have you modeled quantum optical loss mechanisms—such as via fictitious beamsplitter methods or equivalent formalisms—in parametric amplifiers, interferometers, or squeezed-light systems?
Familiarity with quantum optical loss modeling · preferred
Have you used or derived squeeze-parameter hyperbolic identities in analysis of squeezing performance or entanglement in quantum optical systems?
Knowledge of squeeze-parameter hyperbolic identities · preferred
Have you conducted or closely studied research involving cascaded optical parametric amplifiers, SU(1,1) interferometry, or two-mode squeezing in quantum systems?
Frontier research in cascaded parametric amplifiers or SU(1,1) interferometry · preferred

0 of 6 answered

Included with this listing

Interview prep — 10 questions

Matched to what this platform's screening actually measures. Answer each out loud in 60–90 seconds: claim → concrete example → implication.

What it tests: Depth of hands-on technical mastery in the core mathematical machinery for this role; ability to connect abstract formalism to concrete physical insights rather than reciting textbook definitions.
A strong answer: The candidate describes a specific system (cascaded amplifier, interferometer, or squeezed-light setup), explains why covariance matrices were the right tool, walks through a key step of the transformation, and reports a concrete result—noise floor, entanglement measure, or loss tolerance—that either guided experiment design or resolved a discrepancy.
Where people lose it: Candidate describes Bogoliubov transformations in generic terms ('we used it to analyze the system') without specifying which operator pairs were transformed, what physical quantity it revealed, or how the result changed their approach. Rote textbook exposition without lived problem-solving signals the knowledge is decorative.