## Selected Research Highlights

- Clock–Work Trade-Off Relation for Coherence in Quantum Thermodynamics - Relating two different — clock and work — resources of coherence in quantum thermodynamics that is reminiscent of the time-energy uncertainty relation. (PRL 2018)
- Quantifying the coherence between coherent states - A measure that ties quantum coherence inextricably to the nonclassicality of light (PRL 2017, Editor's suggestion)
- Deterministic Bell Measurement and Teleportation for Multiphoton Qubits (PRL 2015)
- Entangling quantum and classical states of light - hybrid entanglement (Nature Photonics 2014, Cover Article for July Issue.)
- H. Jeong, A. Zavatta, M. Kang, S.-W. Lee, L. S. Costanzo, S. Grandi, T. C. Ralph, and M. Bellini, "Generation of hybrid entanglement of light," Nature Photonics 8, 564 (2014).
- Article for non-specialists

- Quantum-to-classical transition explained by fuzziness of measurement references (PRL 2014)
- Quantum tele-amplification (Nature Photonics 2013)
- Deterministic teleportation and quantum computation using hybrid qubits (PRA 2013)
- Quantification of 'Schrödinger's-cattiness' (PRL 2011)
- The quantum world revealed by a classical measurement (PRL 2009)
- Bosonic commutation relation demonstrated using single photon interference (PRL 2008, PRL 2009)
- M. S. Kim, H. Jeong, A. Zavatta, V. Parigi, and M. Bellini, "Scheme for proving the bosonic commutation relation using single-photon interference,"

Phys. Rev. Lett. 101, 260401 (2008).
- Zavatta, V. Parigi, M.-S. Kim, H. Jeong, and M. Bellini, "Experimental demonstration of bosonic commutation relation via superpositions of quantum operations on thermal light fields," Phys. Rev. Lett. 103, 140406 (2009).

- Experimental implementation of "Schrödinger cat" states of light (Nature 2007)
- Schrödinger's "hot" cat (PRL 2006)
- Schemes to generate Schrödinger cat states of light (PRA(R) 2004, PRA(R) 2004)
- H. Jeong, M.-S. Kim, T. C. Ralph and B. S. Ham, "Generation of macroscopic superposition states with small nonlinearity," Phys. Rev. A 70, 061801(R) (2004).
- A.P. Lund, H. Jeong, T. C. Ralph and M. S. Kim, "Conditional production of superpositions of coherent states with inefficient photon detection," Phys. Rev. A 70, 020101(R) (2004).

- Quantum information processing using Schrödinger cat states (PRA 2001, PRA 2002)

## Research Interests

- Foundations of quantum theory
- Quantum information theory
- Quantum nonlocality and entanglement
- Theoretical quantum optics
- Optical quantum information processing
- Generation and detection of non-classical light