论文标题
由纠缠操作和本地测量的两倍引擎的两倍引擎
A two-qubit engine fueled by entangling operations and local measurements
论文作者
论文摘要
我们引入了两倍的发动机，该发动机由纠结操作和投射的本地量子测量提供动力。能量是从一个连贯交换单个激发的引发量子位中提取的。该发动机使用测量的信息和反作用，被推广到N Qubit链。我们表明，通过逐渐增加沿链的能量分裂，可以通过连续的邻居交换操作和局部测量结果确定地将第一个量子的初始低能确定地转换为任意高的能量。将局部测量值模拟为量子符号与仪表的纠缠，我们将测量燃料确定为刷子之间相关性的能量成本。
We introduce a two-qubit engine that is powered by entangling operations and projective local quantum measurements. Energy is extracted from the detuned qubits coherently exchanging a single excitation. This engine, which uses the information and back-action of the measurement, is generalized to an N-qubit chain. We show that by gradually increasing the energy splitting along the chain, the initial low energy of the first qubit can be up-converted deterministically to an arbitrarily high energy at the last qubit by successive neighbor swap operations and local measurements. Modeling the local measurement as the entanglement of a qubit with a meter, we identify the measurement fuel as the energetic cost to erase correlations between the qubits.
