Senior Quantum Memory Scientist — On-Chip, Cryogenic Lab

Quantum Software; Hoboken, Northern (NJ, KY); Hybrid; USD 140,000 - 190,000; Full time

Job summary

Quantum Computing Inc. in Hoboken, NJ, seeks a Senior Research Scientist to lead the development of chip-integrated quantum memory based on Er:TFLN. You will own the memory characterization—from cryogenic tests to integration with photonic chips and quantum-networking hardware.

The role requires a Ph.D. in a related field and 3+ years of hands-on experimental work in quantum optics or solid-state photonics. Strong Python/MATLAB skills and experience with cryogenics are essential.

Qualifications

• Ph.D. in Physics, Applied Physics, Electrical Engineering, Optical Engineering, or a related field.
• 3+ years of hands-on experimental research in quantum optics, AMO physics, or solid-state quantum photonics beyond the Ph.D.
• Direct experience with rare-earth-doped solid-state systems (e.g., erbium, neodymium, praseodymium, ytterbium) for optical or quantum storage.
• Hands-on experience with cryogenic systems and low-temperature optical measurements.
• Experience designing for, or characterizing devices on, photonic integrated circuit platforms - thin-film lithium niobate strongly preferred.
• Strong grounding in nonlinear and quantum optics, single-photon detection, and low-noise optical measurement techniques.
• Proficiency in Python or MATLAB for instrument control, data acquisition, and simulation.
• A track record of peer-reviewed publications in quantum optics, quantum information, or related fields.

Responsibilities

• Develop and optimize the light-matter interface between Er3+ ion ensembles and TFLN photonic structures for high-efficiency, low-noise photon storage and retrieval.
• Implement and benchmark on-chip quantum memory protocols (e.g., atomic frequency comb, spin-wave storage, EIT) and characterize storage efficiency, fidelity, and coherence times.
• Assemble and run cryogenic experiments (closed-cycle cryocoolers / dilution refrigerators) to measure spectral, hyperfine, and coherence properties of Er ions in TFLN, including the effect of applied magnetic and electric bias fields.
• Collaborate with QCi's photonic IC design and fabrication teams to co-design memory-compatible waveguides, ring resonators, and electro-optic tuning elements, and to align on process and packaging constraints.
• Model and simulate device performance - absorption, storage efficiency, added noise - using tools such as Lumerical, COMSOL, or custom Python/MATLAB code, and reconcile simulation with measurement.
• Integrate the quantum memory module with QCi's broader QKD and quantum-networking hardware (sources, modulators, single-photon detectors, timing electronics), supporting system-level test and validation from prototype to field-deployable hardware.
• Document methodologies and results, contribute to peer-reviewed publications and patent filings, and mentor junior scientists and engineers on the project.
• Represent QCi's quantum memory work with partners, funding agencies, and at technical conferences.

Skills

Erbium-doped solids

Cryogenic measurements

Python

MATLAB

Quantum memory

On-chip photonics

Low-noise optical measurements

Waveguides and PICs

Experiment design

Cryogenic systems

Education

Ph.D. in Physics, Applied Physics, Electrical Engineering, Optical Engineering, or a related field

Tools

Lumerical

COMSOL

Python

MATLAB

Job description

Quantum Computing Inc. in Hoboken, NJ, seeks a Senior Research Scientist to lead the development of chip-integrated quantum memory based on Er:TFLN. You will own the memory characterization—from cryogenic tests to integration with photonic chips and quantum-networking hardware.

The role requires a Ph.D. in a related field and 3+ years of hands-on experimental work in quantum optics or solid-state photonics. Strong Python/MATLAB skills and experience with cryogenics are essential.