Scholars@Duke
Harold U. Baranger

Harold U. Baranger

Professor Emeritus of Physics
Physics
harold.baranger@duke.edu
Box 90305, Durham, NC 27708-0305
291 Physics Bldg, Durham, NC 27708

Featured Works

Conductance of a dissipative quantum dot: Nonequilibrium crossover near a non-Fermi-liquid quantum critical point

Journal article Physical Review B · October 25, 2021 Featured Publication We find the nonlinear conductance of a dissipative resonant level in the nonequilibrium steady state near its quantum critical point. The system consists of a spin-polarized quantum dot connected to two resistive leads that provide ohmic dissipation. We fo ... Full text Open Access Link to item Cite

Driven-Dissipative Phase Transition in a Kerr Oscillator: From Semi-Classical PT Symmetry to Quantum Fluctuations.

Journal article Physical Review A · March 24, 2021 Featured Publication We study a minimal model that has a driven-dissipative quantum phase transition, namely a Kerr non-linear oscillator subject to driving and dissipation. Using mean-field theory, exact diagonalization, and the Keldysh formalism, we analyze the critical phen ... Full text Open Access Link to item Cite

Nonequilibrium quantum critical steady state: Transport through a dissipative resonant level

Journal article Physical Review Research · February 11, 2021 Featured Publication Full text Open Access Cite

Stabilization of a Majorana Zero Mode through Quantum Frustration.

Journal article Physical Review B · July 1, 2020 Featured Publication We analyze a system in which a topological Majorana zero mode (MZM) combines with a MZM produced by quantum frustration. At the boundary between the topological and non-topological states, a MZM does not appear. The system that we study combines two parts, ... Full text Open Access Link to item Cite

Interference of Chiral Andreev Edge States

Journal article Nature Physics · May 18, 2020 Featured Publication The search for topological excitations such as Majorana fermions has spurred interest in the boundaries between distinct quan- tum states. Here, we explore an interface between two prototypical phases of electrons with conceptually different ground states: ... Full text Open Access Link to item Cite

Heralded Bell State of Dissipative Qubits Using Classical Light in a Waveguide.

Journal article Physical Review Letters · April 9, 2019 Featured Publication Maximally entangled two-qubit states (Bell states) are of central importance in quantum technologies. We show that heralded generation of a maximally entangled state of two intrinsically open qubits can be realized in a one-dimensional (1D) system through ... Full text Open Access Link to item Cite

Exciting a Bound State in the Continuum through Multiphoton Scattering Plus Delayed Quantum Feedback.

Journal article Phys Rev Lett · February 22, 2019 Featured Publication Excitation of a bound state in the continuum (BIC) through scattering is problematic since it is by definition uncoupled. Here, we consider a type of dressed BIC and show that it can be excited in a nonlinear system through multiphoton scattering and delay ... Full text Open Access Link to item Cite

Quantum interference and complex photon statistics in waveguide QED

Journal article Physical Review A · February 7, 2018 Featured Publication We obtain photon statistics by using a quantum jump approach tailored to a system in which one or two qubits are coupled to a one-dimensional waveguide. Photons confined in the waveguide have strong interference effects, which are shown to play a vital rol ... Full text Open Access Link to item Cite