Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Compatibility of Continuous Rabi Oscillation and Discontinuous Quantum Jumps

연속적 라비 진동과 불연속적 양자도약의 양립성

  • Chough, Young-Tak (Department of Healthcare & Medical Technology, Gwangju University) ;
  • Kim, Kisik (Department of Physics, Inha University)
  • Received : 2012.02.24
  • Accepted : 2012.04.04
  • Published : 2012.04.25
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Abstract

The connection between the continuousness of Rabi oscillation and the discontinuity of quantum jumps has long remained one of the conceptual difficulties since the discovery of the quantum physical paradigm. In this study, however, we demonstrate that the behavior of the atom-field composite system gradually changes from the continuous Rabi interaction to the discontinuous quantum jumps as the atom-field coupling strength is reduced. The reduction occurs through enlarging the quantization volume of the mode so that the mode approaches one of the infinitely many modes of the thermal background.

양자물리학적 패러다임이 발견된 이래, 라비(Rabi) 진동과 같은 전자(electron)의 에너지 준위 간 연속적인 천이(transition)와 보어(Bohr) 모형으로 대표되는 불연속적 양자 도약(quantum jump)의 상충성(incompatibility)은 현재까지도 서로 자연스럽게 연결하기가 어려운 오랜 개념적 어려움으로 남아 있다. 본 연구에서는 그러나, 빛과 물질의 상호작용을 기술하는 현대적 이론 중의 하나인 양자궤적이론(quantum trajectory theory)의 관점에서 단일 모드 공진기 장(single mode cavity field)과 상호작용하는 단일 원자의 행동을 관찰한 바, 원자-장 간 상호작용의 강도(strength)가 줄어듦에 따라서 원자의 행동이 연속적 라비 진동으로부터 불연속적 양자도약의 양상으로 점진적으로 변화하여 가는 과정을 발견하고, 이 단순하면서도 흥미로운 현상에 대하여 보고한다.

Keywords

References

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