Journal
PHYSICAL REVIEW LETTERS
Volume 125, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.125.093601
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Funding
- United States Army Research Lab's Center for Distributed Quantum Information (CDQI) at the University of Maryland
- Army Research Lab
- National Science Foundation Physics Frontier Center at the Joint Quantum Institute [PHY1430094]
- AFOSR
- ARO MURI
- DOE ASCR Quantum Testbed Pathfinder program [DE-SC0019040]
- DOE BES Materials and Chemical Sciences Research for Quantum Information Science program [DE-SC0019449]
- DOE ASCR Accelerated Research in Quantum Computing program [DE-SC0020312]
- NSF PFCQC program
- Foundation for Polish Science within the First Team program
- European Union under the European Regional Development Fund
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Ultracold systems offer an unprecedented level of control of interactions between atoms. An important challenge is to achieve a similar level of control of the interactions between photons. Towards this goal, we propose a realization of a novel Lennard-Jones-like potential between photons coupled to the Rydberg states via electromagnetically induced transparency (EIT). This potential is achieved by tuning Rydberg states to a Forster resonance with other Rydberg states. We consider few-body problems in 1D and 2D geometries and show the existence of self-bound clusters (molecules) of photons. We demonstrate that for a few-body problem, the multibody interactions have a significant impact on the geometry of the molecular ground state. This leads to phenomena without counterparts in conventional systems: For example, three photons in two dimensions preferentially arrange themselves in a line configuration rather than in an equilateral-triangle configuration. Our result opens a new avenue for studies of many-body phenomena with strongly interacting photons.
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