Quantum Physics of Information (University of Maryland / JQI)

The Joint Quantum Institute (JQI) at the University of Maryland is a partnership between UMD and the National Institute of Standards and Technology (NIST). It is one of the leading quantum science research centres in the United States, with particular strength in trapped ion quantum computing, quantum simulation, and open quantum systems. JQI education resources reflect that experimental and theoretical depth.

JQI’s educational materials cover the physics of quantum information with a perspective shaped by close contact with experimental quantum systems. This means the theory is consistently grounded in what real quantum hardware does and how noise, decoherence, and dissipation affect quantum information processing in practice.

What you’ll learn

• Open quantum systems: the Lindblad master equation, quantum trajectories, measurement backaction, and how quantum information is degraded by environmental interactions
• Decoherence theory: the physical mechanisms by which quantum systems lose coherence and the timescales relevant to different hardware platforms
• Quantum simulation: how quantum systems can simulate other quantum systems, the theoretical basis for quantum advantage in simulation, and experimental implementations
• Many-body quantum physics: entanglement in many-body systems, area laws, tensor network methods, and connections to condensed matter physics
• Quantum optics foundations: light-matter interaction, cavity QED, and the physics underlying photonic and atom-based quantum computing platforms
• Experimental considerations: how theoretical quantum information concepts map onto the practical constraints of real quantum hardware

Who is this for

Graduate students in physics interested in the experimental and theoretical physics of quantum information, particularly in trapped ion systems, quantum optics, or quantum simulation. Researchers in quantum hardware who want a stronger theoretical foundation in open quantum systems will find this especially valuable. Those interested in NIST or national laboratory quantum research careers will benefit from exposure to JQI’s research culture and priorities.

Prerequisites

Undergraduate quantum mechanics at a thorough level is required, including familiarity with Dirac notation, time-dependent perturbation theory, and the harmonic oscillator. Some graduate quantum mechanics is strongly recommended. Linear algebra and classical mechanics background is assumed. This is a graduate-level resource not suited to beginners.