Deterministic creation of stationary entangled states by dissipation

摘要: We propose a practical physical system for creation of stationary entanglement by dissipation without employing environmental engineering techniques. The proposed is composed two perfectly distinguishable atoms, through their significantly different transition frequencies, with only one atom addressed an external laser field. show that the arrangement would easily be realized in practice trapping atoms at distance equal to quarter-wavelength standing-wave field and locating node other successive antinode wave. undesirable dipole-dipole interaction between which could large this small distance, adjusted zero specific initial preparation or polarization atomic dipole moments. Following arrangement, we dissipative relaxation can create on demand tuning Rabi frequency difference frequencies. dresses identify entangled state occurs when sidebands driven tunes undriven atom. It also found thatmore » behaves as cascade open where fluorescence from dressed drives no feedback.« less