4 papers
Field-Free Transverse Aharonov--Bohm Phase Gate for an Orbital -Qubit
Ju Gao, Fang Shen
The Aharonov--Bohm (AB) effect is usually read out through phase differences associated with spatially distinct electron paths. We show that confined orbital modes provide a same-p…
Heliciton-Assisted Chirality-Induced Spin Selectivity from Helical Dirac Current
Ju Gao, Fang Shen
We develop a quantized screw-mode mechanism for chirality-induced spin selectivity (CISS). The corresponding quantum, termed a heliciton, is a screw-symmetric environmental excitat…
Helical Dirac Current with Local Coupling to a Chiral Potential
Ju Gao, Fang Shen
We show that exact Dirac eigenstates in cylindrical confinement carry a definite helical conserved-current texture even in the zero orbital angular momentum channel l = 0. For the…
Bell Correlations from Prepared Coherence in Entangled Dirac Wavepackets
Ju Gao, Fang Shen
Bell correlations are usually formulated for an ideal spin singlet, for which the Bell--CHSH combination reaches the maximal quantum value \(B=-2\sqrt{2}\), independent of detector…