I am new here in StackExchange and this will be my first question to ask. I have a background in Computer Science and I am interested in looking into Distributed Quantum Computing (DQC). I have read some papers in DQC and one of the mentioned motivations in doing research in this field is the issue of quantum decoherence with respect to the size of superposition in the quantum system being used for computation. One might opt to resort to DQC by letting quantum computers using small quantum superpositions perform distributed computation than use a monolithic quantum computer using large quantum superposition (resulting to higher decoherence rate). The papers which I have read so far do not provide references to researches working on the relationship of size of quantum superposition to the rate of quantum decoherence though.
I am interested to know whether an upper bound on the size of superposition of a quantum system can be defined as a factor for considering DQC with respect to decoherence rate in place of the monolithic design of a quantum computer using a large quantum superposition.
There are also works on coping up with decoherence like manipulation of the environment to improve the rate. I just think that DQC is still an interesting field for research though.
I would appreciate any references to works on relationship of size of superposition to rate of decoherence anyone could provide.