Eric Holland and Anna G

Strategic Planning Workshop

10 January 2020

Quantum Science and Technology

• Adapt and Utilize Quantum Sensors to enable new physics

experiments and searches.

• Leverage and Advance Superconducting Quantum Systems

technologies for transformative breakthroughs in quantum sensing

and quantum simulation/computation

• Identify and Implement Quantum Algorithms on existing quantum

computers for promising HEP applications.

• Demonstrate and Explore Quantum Simulations to better

understand the quantum nature of our universe.

• Develop and Deploy Quantum Networks for long range quantum

communications. (PROPOSED)

Quantum Science and Technology Goals

1/10/2020 Quantum Science and Technology Strategic Planning 20202

Adapt and Utilize Quantum Sensors

1/10/2020 Quantum Science and Technology Strategic Planning 20203

Funded by

DOE QuantISED

Fermilab LDRD

Objective: Optimize design of qubit-based photon sensors for

HEP applications.

Leverage and Advance Superconducting Quantum Systems

1/10/2020 Quantum Science and Technology Strategic Planning 20204

Objective: Explore the potential of cavity QED systems as a

quantum sensor for dark photon searches:

First three runs completed successfully - publication soon

Record high photon lifetimes achieved with SRF quantum systems

5

A. Romanenko, R. Pilipenko, S. Zorzetti, D. Frolov, M. Awida, S. Posen, A. Grassellino, arXiv:1810.03703

Accelerator cavities adopted for quantum regime

QIS state-of-the-art: 7 ms

2 s, 300x improvement

Integration with transmonqubits (UW Madison provides)measurements underway

1/9/2020 Grassellino - Quantum Sensing @ Fermilab

A. Romanenko, S. Posen, and A. Grassellino, “Methods and system for treatment of SRF cavities to minimize TLS losses,” US patent pending, Serial No.: 62/742,328.

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• Demonstrated high coherence 3D SRF quantum systems based on world-leading SRF expertise

• Routine large scale integration of high Q systems (modern accelerators)

• Premier HEP core strengths: theory, computational science, data acquisition

• Full in-house core support: microwave engineering, cryogenics, mechanical engineering, multichannel electronics etc

• Superconducting qubit fabrication/expertise

• Quantum measurements

• Quantum limited amplifiers• Qubit fabrication expertise

• FNAL-NU Center for Applied Physics and Superconducting Technologies (CAPST)

• World class theoretical expertise in superconductivity and quantum systems

Current SRF Quantum Collaboration

1/9/2020 Grassellino - Quantum Sensing @ Fermilab

A. Romanenko E. Holland R. McDermott

D. Pappas

J. Sauls

• Best and custom transmon qubits to couple to SRF cavities

• Quantum measurements expertise• Material science to improve

transmon qubit coherence

M. Rigor

Identify and Implement Quantum Algorithms

1/10/2020 Quantum Science and Technology Strategic Planning 20207

Objective: characterize performance of Boson implementation no current QC hardware

• Quantum-classical hybrid algorithm

– quantum: efficient measurement of trial-state energy

– classical: gradient-based algorithm to update trial state

• Trial state parameterized by a quantum circuit

• Implementation on Rabi-model (boson coupled to spin)

Objective: Develop preliminary methods to simulate quantum

field theories on a near term quantum computer.

Demonstrate and Explore Quantum Simulations

1/10/2020 Quantum Science and Technology Strategic Planning 20208

Variational method to prepare a Gaussian wavefunction on a 6

qubit subset of a Rigetti Computing device.

Develop and Deploy Quantum Networks

1/10/2020 Quantum Science and Technology Strategic Planning 20209

QuTAG GUIPhotonSpotJPL SNSPDs

Quantum OpusAWG

SPDC

CW LASER

SHG 2 GHzFilters

Wavemeter

Objective: Commission working quantum node based on time

bin entangled photons.

Outlook for FY2020

1/10/2020 Quantum Science and Technology Strategic Planning 202010

• Quantum Sensors: MAGIS-100 to begin construction.

• Superconducting Quantum Systems: Dark Photon search

begins in earnest.

• Quantum Algorithms: First results from collaboration with

Google.

• Quantum Simulation: Co-design development of QFT

simulations with Rigetti Computing.

• Quantum Networks: Demonstration of on-site node-to-node

communication

• Strategic Partnerships: Co-development of

superconducting quantum processors and on-site hosting of

Rigetti Computing device.

3-5 Year Outlook

1/10/2020 Quantum Science and Technology Strategic Planning 202011

• Quantum Sensors: Construct and operate superconducting

qubit-based photon detectors in an axion experiment

configuration.

• Superconducting Quantum Systems: Operate a multi-qubit

SRF-3D technology quantum computer with long coherence

times.

• Quantum Algorithms: Provide US HEP researchers with

access to cloud quantum computing resources through

HEPCloud.

• Quantum Simulation: Quantum field theory simulation on

Fermilab superconducting quantum systems.

• Quantum Networks: Demonstrate repeater-less quantum

network at the metropolitan scale.