Chapter 30 Further Reading: The State of the Art — Where Quantum Physics Is Going

Tier 1: Essential References

These are the primary references that cover the material of this chapter at a level closely matching our treatment. You should consult at least one from each topic area.

Quantum Computing

Preskill, J. — "Quantum Computing in the NISQ Era and Beyond" (2018) arXiv:1801.00862. The paper that coined "NISQ" and defined the era. Preskill provides a clear-eyed assessment of what NISQ devices can and cannot do, the challenges of quantum error correction, and the path to fault tolerance. Essential reading for anyone entering the field. - Best for: Understanding the landscape of quantum computing with appropriate nuance. Freely available on arXiv.

Nielsen, M. A. & Chuang, I. L. — Quantum Computation and Quantum Information, 10th Anniversary ed. (2010) The bible of quantum information science. Chapters 10–12 cover quantum error correction, and Chapter 4 covers quantum circuits. The treatment is mathematically rigorous and comprehensive. Every quantum computing researcher has a copy on their shelf. - Best for: Deep understanding of quantum algorithms and error correction. Use as a reference alongside this textbook's Chapters 25 and 35.

Arute, F. et al. — "Quantum Supremacy Using a Programmable Superconducting Processor," Nature 574, 505 (2019) The Google Sycamore paper. Read it alongside the IBM response (Pednault et al., arXiv:1910.09534) for a balanced perspective on quantum supremacy claims. - Best for: Understanding what the first quantum supremacy experiment actually demonstrated — and what it did not.

Acharya, R. et al. — "Quantum Error Correction Below the Surface Code Threshold," Nature (2024) The Google Willow paper demonstrating error correction that improves with code distance. This is the most significant experimental milestone in quantum error correction to date. - Best for: Understanding the transition from NISQ to early fault-tolerant quantum computing.

Quantum Sensing

Degen, C. L., Reinhard, F., & Cappellaro, P. — "Quantum Sensing," Reviews of Modern Physics 89, 035002 (2017) The definitive review of quantum sensing. Covers the theoretical framework (quantum parameter estimation, SQL vs. Heisenberg limit), all major platforms (NV centers, atomic clocks, atom interferometers, SQUIDs), and applications. Thorough, pedagogical, and heavily referenced. - Best for: Anyone who wants a comprehensive introduction to quantum sensing. Freely available on arXiv (1611.02427).

Ludlow, A. D., Boyd, M. M., Ye, J., Peik, E., & Schmidt, P. O. — "Optical Atomic Clocks," Reviews of Modern Physics 87, 637 (2015) A detailed review of optical clock physics, including lattice clocks, ion clocks, and their applications to fundamental physics and metrology. - Best for: Understanding the physics and engineering of the most precise measurement devices ever built.

Quantum Communication

Gisin, N., Ribordy, G., Tittel, W., & Zbinden, H. — "Quantum Cryptography," Reviews of Modern Physics 74, 145 (2002) An accessible review of quantum key distribution, covering BB84, B92, and other protocols, experimental implementations, and practical security considerations. Somewhat dated but the fundamentals remain unchanged. - Best for: First introduction to QKD for physics students.

Wehner, S., Elkouss, D., & Hanson, R. — "Quantum Internet: A Vision for the Road Ahead," Science 362, eaam9288 (2018) A visionary paper outlining the stages of quantum internet development, from trusted-node QKD to full quantum computing over a network. Introduces the "quantum internet stack" concept. - Best for: Understanding the long-term vision for quantum communication and networking.

Quantum Simulation

Georgescu, I. M., Ashhab, S., & Nori, F. — "Quantum Simulation," Reviews of Modern Physics 86, 153 (2014) A comprehensive review of both analog and digital quantum simulation, covering platforms (cold atoms, trapped ions, superconducting circuits, photonic systems), algorithms (Trotterization, VQE), and target applications. - Best for: A broad overview of the quantum simulation landscape.

Altman, E. et al. — "Quantum Simulators: Architectures and Opportunities," PRX Quantum 2, 017003 (2021) A community roadmap for quantum simulation, written by a large group of leading researchers. Covers the current state of the art, near-term opportunities, and long-term goals. - Best for: Understanding what quantum simulators can do today and what they might do in the next decade.

Quantum Gravity

Kiefer, C. — Quantum Gravity, 3rd ed. (2012) An accessible textbook-level introduction to quantum gravity, covering canonical quantum gravity, loop quantum gravity, string theory, and other approaches. Requires general relativity and quantum field theory background. - Best for: Graduate students who want a balanced survey of quantum gravity approaches.

Maldacena, J. — "The Large-N Limit of Superconformal Field Theories and Supergravity," Advances in Theoretical and Mathematical Physics 2, 231 (1998) The original AdS/CFT paper. Dense and technical, but historically essential. For a pedagogical introduction, see:

Harlow, D. — "Jerusalem Lectures on Black Holes and Quantum Information," Reviews of Modern Physics 88, 015002 (2016) A beautifully clear set of lectures on the black hole information paradox and its connections to quantum information theory, including the firewall problem and the ER=EPR proposal. - Best for: Understanding the deep connections between quantum gravity and quantum information.

Tier 2: Supplementary and Enrichment

These sources provide deeper context, alternative perspectives, or coverage of specific topics beyond our treatment.

Quantum Computing — Deeper Dives

Aaronson, S. — Quantum Computing Since Democritus (2013) A unique and entertaining book by one of the field's most original thinkers. Covers quantum computing in the broader context of computational complexity, philosophy, and the nature of physical law. Not a textbook, but profoundly insightful.

Montanaro, A. — "Quantum Algorithms: An Overview," npj Quantum Information 2, 15023 (2016) A clear, concise survey of known quantum algorithms and their speedups over classical counterparts. Regularly updated on the author's website.

Campbell, E. T., Terhal, B. M., & Vuillot, C. — "Roads Towards Fault-Tolerant Universal Quantum Computation," Nature 549, 172 (2017) A review of approaches to fault-tolerant quantum computing, including surface codes, color codes, and magic-state distillation.

Bharti, K. et al. — "Noisy Intermediate-Scale Quantum (NISQ) Algorithms," Reviews of Modern Physics 94, 015004 (2022) A comprehensive review of VQE, QAOA, and other NISQ algorithms, including honest assessments of their limitations.

Quantum Sensing — Deeper Dives

Pezzè, L., Smerzi, A., Oberthaler, M. K., Schmied, R., & Treutlein, P. — "Quantum Metrology with Nonclassical States of Atomic Ensembles," Reviews of Modern Physics 90, 035005 (2018) The definitive theoretical and experimental review of entanglement-enhanced atomic metrology, covering spin squeezing, GHZ states, and their applications to clocks and interferometers.

Barry, J. F. et al. — "Sensitivity Optimization for NV-Diamond Magnetometry," Reviews of Modern Physics 92, 015004 (2020) A practical guide to building and optimizing NV-center magnetometers, covering all aspects from diamond engineering to pulse sequences to photon collection.

Tino, G. M. & Kasevich, M. A. (eds.) — Atom Interferometry (IOS Press, 2014) A collection of lectures from the Enrico Fermi International School on atom interferometry, covering both fundamental physics and practical applications.

Quantum Communication — Deeper Dives

Scarani, V. et al. — "The Security of Practical Quantum Key Distribution," Reviews of Modern Physics 81, 1301 (2009) A thorough treatment of QKD security, including side-channel attacks and device-independent protocols.

Muralidharan, S. et al. — "Optimal Architectures for Long Distance Quantum Communication," Scientific Reports 6, 20463 (2016) Analyzes different quantum repeater architectures and their performance trade-offs for long-distance quantum communication.

Career and Workforce

National Quantum Initiative Advisory Committee — "Renewing the National Quantum Initiative" (2023) A U.S. government report on the state of quantum technology and workforce needs. Available at quantum.gov.

Quantum Economic Development Consortium (QED-C) — "Quantum Jobs Survey" (2024) Survey data on quantum industry hiring, skills demand, and salary ranges. Available at quantumconsortium.org.

Asfaw, A. et al. — "Building a Quantum Engineering Undergraduate Program," IEEE Transactions on Education 65, 220 (2022) Describes the emerging academic programs designed to produce quantum engineers, including curriculum recommendations.

These are for general readers, non-specialist colleagues, or anyone who wants the big picture without the technical details.

Aaronson, S. — "Quantum Computing: An Overview" (Shtetl-Optimized blog, regularly updated) The best single resource for understanding quantum computing claims, hype, and reality, written by a leading theoretical computer scientist with exceptional clarity and integrity. - URL: scottaaronson.blog

Preskill, J. — "Quantum Computing 40 Years Later" (2021) arXiv:2106.10522. A retrospective on quantum computing's development, written on the 40th anniversary of Feynman's original lecture. Characteristically thoughtful and balanced.

Ball, P. — Beyond Weird: Why Everything You Thought You Knew about Quantum Physics Is Different (2018) An excellent popular science book that covers quantum foundations, measurement, entanglement, and quantum technology with unusual depth and accuracy.

Bernhardt, C. — Quantum Computing for Everyone (MIT Press, 2019) An accessible introduction to quantum computing for readers with minimal mathematical background. Uses Dirac notation but assumes no prior physics beyond high school.

Dowling, J. P. — Schrödinger's Killer App: Race to Build the World's First Quantum Computer (2013) A lively, opinionated account of the quantum computing race by one of its pioneers. Somewhat dated but captures the excitement and personalities of the field.

Online Resources

ArXiv Preprint Categories

  • quant-ph: Quantum physics (quantum information, quantum computing, quantum foundations)
  • cond-mat: Condensed matter (quantum simulation, topological phases, superconductivity)
  • hep-th: High-energy theory (quantum gravity, string theory, AdS/CFT)
  • gr-qc: General relativity and quantum cosmology
  • physics.atom-ph: Atomic physics (atomic clocks, atom interferometry, cold atoms)

Key Conferences and Proceedings

  • QIP (Quantum Information Processing): The premier theory conference. Proceedings and recorded talks available online.
  • APS March Meeting: The largest physics meeting; quantum sessions span computing, sensing, simulation, and materials.
  • APS DAMOP (Division of Atomic, Molecular, and Optical Physics): The premier AMO conference. Covers quantum sensing and atomic physics.
  • IEEE Quantum Week: Industry-focused quantum computing conference.

Online Courses and Lecture Series

  • MIT 8.370x/8.371x (Quantum Information Science) — edX. Peter Shor and Isaac Chuang.
  • Qiskit Textbook — open-source, interactive textbook for quantum computing using IBM's Qiskit framework. Available at qiskit.org/learn.
  • QuTech Academy — courses on quantum internet and quantum computing from TU Delft.
  • Perimeter Institute Recorded Lectures — pirsa.org. Extensive library of quantum gravity, quantum information, and quantum foundations lectures.
  • KITP (Kavli Institute) Programs — online.kitp.ucsb.edu. Research programs with recorded talks on frontier topics.

Quantum Computing Platforms (Hands-On)

  • IBM Quantum (Qiskit): Free cloud access to quantum hardware. Python SDK.
  • Google Cirq: Open-source quantum computing framework. Simulators and (limited) hardware access.
  • Amazon Braket: Cloud access to multiple quantum hardware platforms (IonQ, Rigetti, QuEra).
  • PennyLane (Xanadu): Framework for quantum machine learning and quantum chemistry. Hardware-agnostic.
  • QuTiP: Python framework for simulating open quantum systems. Essential for quantum optics and decoherence research.

How to Stay Current

Quantum technology moves fast. Here are strategies for staying informed:

  1. Daily: Scan the quant-ph arXiv new submissions (arxiv.org/list/quant-ph/new). Takes 10–15 minutes.
  2. Weekly: Read at least one paper in depth from your area of interest.
  3. Monthly: Check the Quantum Computing Report (quantumcomputingreport.com) for industry news and hardware benchmarks.
  4. Quarterly: Read a review article in a new-to-you subfield. This is how you build breadth.
  5. Annually: Attend a major conference (QIP, March Meeting, DAMOP) or watch recorded talks.